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大久保 忠勝
Address
305-0047 茨城県つくば市千現1-2-1 [アクセス]
  • 論文・発表

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研究論文 TSV

2019
  1. K. Mukaiyama, J. W. Jung, H. Sepehri-Amin, S. Kasai, T. Furubayashi, T. Ohkubo, K. Hono. Over 100% magnetoresistance ratio at room temperature in magnetic tunnel junctions with CuGaSe2 spacer layer. APPLIED PHYSICS LETTERS. (2019) 172402-1-172402-4 10.1063/1.5092269
  2. D. Ogawa, X.D. Xu, Y.K. Takahashi, T. Ohkubo, S. Hirosawa, K. Hono. Emergence of coercivity in Sm(Fe0.8Co0.2)12 thin films via eutectic alloy grain boundary infiltration. Scripta Materialia. 164 (2019) 140-144 10.1016/j.scriptamat.2019.02.001
  3. Shinji Isogami, Jun Uzuhashi, Tadakatsu Ohkubo, Masamitsu Hayashi. Crystalline-structure-dependent magnetoresistance in ferromagnetic metal/conducting amorphous oxide heterostructures. Physical Review Materials. 3 [2] (2019) 10.1103/physrevmaterials.3.024408
  4. I. Dirba, H. Sepehri-Amin, T. Ohkubo, K. Hono. Development of ultra-fine grain sized SmFe12-based powders using hydrogenation disproportionation desorption recombination process. Acta Materialia. 165 (2019) 373-380 10.1016/j.actamat.2018.11.065
  5. X.D. Xu, H. Sepehri-Amin, T.T. Sasaki, M. Soderžnik, X. Tang, T. Ohkubo, K. Hono. Comparison of coercivity and squareness in hot-deformed and sintered magnets produced from a Nd-Fe-B-Cu-Ga alloy. Scripta Materialia. 160 (2019) 9-14 10.1016/j.scriptamat.2018.09.028
  6. M. Soderžnik, J. Li, Lihua Liu, H. Sepehri-Amin, T. Ohkubo, N. Sakuma, T. Shoji, A. Kato, T. Schrefl, K. Hono. Magnetization reversal process of anisotropic hot-deformed magnets observed by magneto-optical Kerr effect microscopy. Journal of Alloys and Compounds. 771 (2019) 51-59 10.1016/j.jallcom.2018.08.231
  7. Kazunori Miyazawa, Satoshi Okamoto, Takahiro Yomogita, Nobuaki Kikuchi, Osamu Kitakami, Kentaro Toyoki, David Billington, Yoshinori Kotani, Tetsuya Nakamura, Taisuke Sasaki, Tadakatsu Ohkubo, Kazuhiro Hono. First-order reversal curve analysis of a Nd-Fe-B sintered magnet with soft X-ray magnetic circular dichroism microscopy. Acta Materialia. 162 (2019) 1-9 10.1016/j.actamat.2018.09.053
2018
  1. Tadakatsu OHKUBO. レーザーアトムプローブによるナノ組織解析. Vacuum and Surface Science. 61 [12] (2018) 778-783 10.1380/vss.61.778
  2. R. Mandal, J. W. Jung, K. Masuda, Y. K. Takahashi, Y. Sakuraba, S. Kasai, Y. Miura, T. Ohkubo, K. Hono. Investigation of Gilbert damping of a tetragonally distorted ultrathin Fe0.5Co0.5 epitaxial film with high magnetic anisotropy. APPLIED PHYSICS LETTERS. 113 [23] (2018) 232406-1-232406-5 10.1063/1.5052721
  3. J. Li, Lihua Liu, H. Sepehri-Amin, Xin Tang, T. Ohkubo, N. Sakuma, T. Shoji, A. Kato, T. Schrefl, K. Hono. Coercivity and its thermal stability of Nd Fe B hot-deformed magnets enhanced by the eutectic grain boundary diffusion process. Acta Materialia. 161 (2018) 171-181 10.1016/j.actamat.2018.09.018
  4. X.D. Xu, K. Mukaiyama, S. Kasai, T. Ohkubo, K. Hono. Impact of boron diffusion at MgO grain boundaries on magneto-transport properties of MgO/CoFeB/W magnetic tunnel junctions. Acta Materialia. 161 (2018) 360-366 10.1016/j.actamat.2018.09.028
  5. Amit Kumar Shukla, Minori Goto, Xiandong Xu, Kohei Nawaoka, Joko Suwardy, Tadakatsu Ohkubo, Kazuhiro Hono, Shinji Miwa, Yoshishige Suzuki. Voltage-Controlled Magnetic Anisotropy in Fe1−xCox/Pd/MgO system. Scientific Reports. 8 [1] (2018) 10.1038/s41598-018-28445-3
  6. Takeshi Watanabe, Satoru Yoshioka, Tomokazu Yamamoto, Hossein Sepehri-Amin, Tadakatsu Ohkubo, Syo Matsumura, Yasuaki Einaga. The local structure in heavily boron-doped diamond and the effect this has on its electrochemical properties. Carbon. 137 (2018) 333-342 10.1016/j.carbon.2018.05.026
  7. J. Fischbacher, A. Kovacs, L. Exl, J. Kühnel, E. Mehofer, H. Sepehri-Amin, T. Ohkubo, K. Hono, T. Schrefl. Searching the weakest link: Demagnetizing fields and magnetization reversal in permanent magnets. Scripta Materialia. 154 (2018) 253-258 10.1016/j.scriptamat.2017.11.020
  8. X.D. Xu, T.T. Sasaki, J.N. Li, Z.J. Dong, H. Sepehri-Amin, T.H. Kim, T. Ohkubo, T. Schrefl, K. Hono. Microstructure of a Dy-free Nd-Fe-B sintered magnet with 2 T coercivity. Acta Materialia. 156 (2018) 146-157 10.1016/j.actamat.2018.06.037
  9. Ken C Pradel, Jun Uzuhashi, Toshiaki Takei, Tadakatsu Ohkubo, Kazuhiro Hono, Naoki Fukata. Investigation of nanoscale voids in Sb-doped p-type ZnO nanowires. Nanotechnology. 29 [33] (2018) 335204 10.1088/1361-6528/aac8c8
  10. K. Niitsu, A. Sato, T.T. Sasaki, R. Sawada, Y. Cho, Y. Takada, T. Sato, Y. Kaneko, A. Kato, T. Ohkubo, D. Shindo, K. Hono, Y. Murakami. Magnetization measurements for grain boundary phases in Ga-doped Nd-Fe-B sintered magnet. Journal of Alloys and Compounds. 752 (2018) 220-230 10.1016/j.jallcom.2018.04.055
  11. X.D. Xu, T.T. Sasaki, Y. Une, H. Kubo, T. Ohkubo, M. Sagawa, K. Hono. Origin of the coercivity difference in Nd-Fe-B sintered magnets processed from hydrogenation-disproportionation-desorption- recombination powder and jet-milled powder. Acta Materialia. 151 (2018) 293-300 10.1016/j.actamat.2018.03.062
  12. Lihua Liu, H. Sepehri-Amin, T. T. Sasaki, T. Ohkubo, M. Yano, N. Sakuma, A. Kato, T. Shoji, K. Hono. Coercivity enhancement of Nd-Fe-B hot-deformed magnets by the eutectic grain boundary diffusion process using Nd-Ga-Cu and Nd-Fe-Ga-Cu alloys. AIP Advances. 8 [5] (2018) 056205 10.1063/1.5006575
  13. H. Sepehri-Amin, A. Taubel, T. Ohkubo, K.P. Skokov, O. Gutfleisch, K. Hono. Microstructural origin of hysteresis in Ni-Mn-In based magnetocaloric compounds. Acta Materialia. 147 (2018) 342-349 10.1016/j.actamat.2018.01.044
  14. Xin Tang, H. Sepehri-Amin, T. Ohkubo, K. Hono. Suppression of non-oriented grains in Nd-Fe-B hot-deformed magnets by Nb doping. Scripta Materialia. 147 (2018) 108-113 10.1016/j.scriptamat.2017.12.032
  15. Jason Paul Hadorn, Hiroaki Sukegawa, Tadakatsu Ohkubo, Seiji Mitani, Kazuhiro Hono. Microstructural evolution of perpendicular magnetization films with an ultra-thin Co2FeAl/MgAl2O4(001) structure. Acta Materialia. 145 (2018) 306-315 10.1016/j.actamat.2017.12.018
  16. Xin Tang, H. Sepehri-Amin, T. Ohkubo, M. Yano, M. Ito, A. Kato, N. Sakuma, T. Shoji, T. Schrefl, K. Hono. Coercivity enhancement of hot-deformed Ce-Fe-B magnets by grain boundary infiltration of Nd-Cu eutectic alloy. Acta Materialia. 144 (2018) 884-895 10.1016/j.actamat.2017.10.071
  17. Takahiro Yomogita, Satoshi Okamoto, Nobuaki Kikuchi, Osamu Kitakami, Hossein Sepehri-Amin, Tadakatsu Ohkubo, Kazuhiro Hono, Takahiro Akiya, Keiko Hioki, Atsushi Hattori. Temperature and field direction dependences of first-order reversal curve (FORC) diagrams of hot-deformed Nd-Fe-B magnets. Journal of Magnetism and Magnetic Materials. 447 (2018) 110-115 10.1016/j.jmmm.2017.09.072
  18. Jason Paul Hadorn, Yusuke Hirayama, Tadakatsu Ohkubo. Characterization of α-Fe-Free Heteroepitaxial NdFe12−x Ti x Thin-Film Materials with a Novel Cubic Laves Fe2Ti Phase. Metallurgical and Materials Transactions A. 49 [1] (2018) 395-405 10.1007/s11661-017-4416-z
2017
  1. Takayuki Nozaki, Anna Kozioł-Rachwał, Masahito Tsujikawa, Yoichi Shiota, Xiandong Xu, Tadakatsu Ohkubo, Takuya Tsukahara, Shinji Miwa, Motohiro Suzuki, Shingo Tamaru, Hitoshi Kubota, Akio Fukushima, Kazuhiro Hono, Masafumi Shirai, Yoshishige Suzuki, Shinji Yuasa. Highly efficient voltage control of spin and enhanced interfacial perpendicular magnetic anisotropy in iridium-doped Fe/MgO magnetic tunnel junctions. NPG Asia Materials. 9 [12] (2017) e451 10.1038/am.2017.204
  2. Teruyuki Kinno, Tomokazu Sasaki, Mitsuhiro Tomita, Tadakatsu Ohkubo. Quantitativeness in laser-assisted atom probe analysis of boron and carbon codoped in silicon. Japanese Journal of Applied Physics. 56 [11] (2017) 116601 10.7567/jjap.56.116601
  3. M. Soderžnik, H. Sepehri-Amin, T.T. Sasaki, T. Ohkubo, Y. Takada, T. Sato, Y. Kaneko, A. Kato, T. Schrefl, K. Hono. Magnetization reversal of exchange-coupled and exchange-decoupled Nd-Fe-B magnets observed by magneto-optical Kerr effect microscopy. Acta Materialia. 135 (2017) 68-76 10.1016/j.actamat.2017.05.006
  4. Shinji Miwa, Motohiro Suzuki, Masahito Tsujikawa, Kensho Matsuda, Takayuki Nozaki, Kazuhito Tanaka, Takuya Tsukahara, Kohei Nawaoka, Minori Goto, Yoshinori Kotani, Tadakatsu Ohkubo, Frédéric Bonell, Eiiti Tamura, Kazuhiro Hono, Tetsuya Nakamura, Masafumi Shirai, Shinji Yuasa, Yoshishige Suzuki. Voltage controlled interfacial magnetism through platinum orbits. Nature Communications. 8 (2017) 15848 10.1038/ncomms15848
  5. Y. K. Takahashi, Y. Miura, R. Choi, T. Ohkubo, Z. C. Wen, K. Ishioka, R. Mandal, R. Medapalli, H. Sukegawa, S. Mitani, E. E. Fullerton, K. Hono. Increased magnetic damping in ultrathin films of Co2FeAl with perpendicular anisotropy. Applied Physics Letters. 110 [25] (2017) 252409 10.1063/1.4989379
  6. Mohamed Belmoubarik, Hiroaki Sukegawa, Tadakatsu Ohkubo, Seiji Mitani, Kazuhiro Hono. Effect of Mg-Al insertion on magnetotransport properties in epitaxial Fe/sputter-deposited MgAl2O4/Fe(001) magnetic tunnel junctions. AIP Advances. 7 [5] (2017) 055908 10.1063/1.4973393
  7. Hiroaki Sukegawa, Yushi Kato, Mohamed Belmoubarik, P.-H. Cheng, Tadaomi Daibou, Naoharu Shimomura, Yuuzo Kamiguchi, Junichi Ito, Hiroaki Yoda, Tadakatsu Ohkubo, Seiji Mitani, Kazuhiro Hono. MgGa2O4 spinel barrier for magnetic tunnel junctions: Coherent tunneling and low barrier height. Applied Physics Letters. 110 [12] (2017) 122404 10.1063/1.4977946
  8. Hiroaki Sukegawa, Jason Paul Hadorn, Zhenchao Wen, Tadakatsu Ohkubo, Seiji Mitani, Kazuhiro Hono. Perpendicular magnetic anisotropy at lattice-matched Co2FeAl/MgAl2O4(001) epitaxial interfaces. Applied Physics Letters. 110 [11] (2017) 112403 10.1063/1.4978663
  9. H. Sepehri-Amin, H. Iwama, T. Ohkubo, T. Shima, K. Hono. Microstructure and in-plane component of L1 0 -FePt films deposited on MgO and MgAl 2 O 4 substrates. Scripta Materialia. 130 (2017) 247-251 10.1016/j.scriptamat.2016.12.018
  10. H. Sepehri-Amin, J. Thielsch, J. Fischbacher, T. Ohkubo, T. Schrefl, O. Gutfleisch, K. Hono. Correlation of microchemistry of cell boundary phase and interface structure to the coercivity of Sm(Co 0.784 Fe 0.100 Cu 0.088 Zr 0.028 ) 7.19 sintered magnets. Acta Materialia. 126 (2017) 1-10 10.1016/j.actamat.2016.12.050
  11. Lihua Liu, H. Sepehri-Amin, T. Ohkubo, M. Yano, A. Kato, N. Sakuma, T. Shoji, K. Hono. Coercivity enhancement of hot-deformed Nd-Fe-B magnets by the eutectic grain boundary diffusion process using Nd 62 Dy 20 Al 18 alloy. Scripta Materialia. 129 (2017) 44-47 10.1016/j.scriptamat.2016.10.020
  12. H. Sepehri-Amin, T. Ohkubo, M. Zakotnik, D. Prosperi, P. Afiuny, C.O. Tudor, K. Hono. Microstructure and magnetic properties of grain boundary modified recycled Nd-Fe-B sintered magnets. Journal of Alloys and Compounds. 694 (2017) 175-184 10.1016/j.jallcom.2016.09.305
  13. Zhenchao Wen, Jason Paul Hadorn, Jun Okabayashi, Hiroaki Sukegawa, Tadakatsu Ohkubo, Koichiro Inomata, Seiji Mitani, Kazuhiro Hono. Interdiffusion in epitaxial ultrathin Co2FeAl/MgO heterostructures with interface-induced perpendicular magnetic anisotropy. Applied Physics Express. 10 [1] (2017) 013003 10.7567/apex.10.013003
  14. Xin Tang, H. Sepehri-Amin, T. Ohkubo, K. Hioki, A. Hattori, K. Hono. Coercivities of hot-deformed magnets processed from amorphous and nanocrystalline precursors. Acta Materialia. 123 (2017) 1-10 10.1016/j.actamat.2016.10.026
2016
  1. T. T. Sasaki, T. Ohkubo, K. Hono. Microstructure of Nd-Fe-B Sintered Magnets—Structure of Grain Boundaries and Interface. Journal of the Japan Institute of Metals. 81 [1] (2016) 2-10 10.2320/jinstmet.ja201606
  2. T. Ohkubo, Hossein Sepehri-Amin, K. Hono. Micromagnetic Simulations of Magnetization Reversals in Nd-Fe-B Based Permanent Magnets. Journal of the Japan Institute of Metals. 81 [1] (2016) 11-18 10.2320/jinstmet.ja201602
  3. Yu-Chun Chen, Simon Sawatzki, Semih Ener, Hossein Sepehri-Amin, Andreas Leineweber, Giuliano Gregori, Fei Qu, Shreyas Muralidhar, Tadakatsu Ohkubo, Kazuhiro Hono, Oliver Gutfleisch, Helmut Kronmüller, Gisela Schütz, Eberhard Goering. On the synthesis and microstructure analysis of high performance MnBi. AIP Advances. 6 [12] (2016) 125301 10.1063/1.4971759
  4. Yasukazu Murakami, Kodai Niitsu, Syuhei Kaneko, Toshiaki Tanigaki, Taisuke Sasaki, Zentaro Akase, Daisuke Shindo, Tadakatsu Ohkubo, Kazuhiro Hono. Strain measurement in ferromagnetic crystals using dark-field electron holography. Applied Physics Letters. 109 [19] (2016) 193102 10.1063/1.4967005
  5. U.M.R. Seelam, Lihua Liu, T. Akiya, H. Sepehri-Amin, T. Ohkubo, N. Sakuma, M. Yano, A. Kato, K. Hono. Coercivity of the Nd–Fe–B hot-deformed magnets diffusion-processed with low melting temperature glass forming alloys. Journal of Magnetism and Magnetic Materials. 412 (2016) 234-242 10.1016/j.jmmm.2016.04.005
  6. T.T. Sasaki, T. Ohkubo, K. Hono. Structure and chemical compositions of the grain boundary phase in Nd-Fe-B sintered magnets. Acta Materialia. 115 (2016) 269-277 10.1016/j.actamat.2016.05.035
  7. Takahiro Akiya, Keiko Hioki, Atsushi Hattori, H. Sepehri-Amin, Tadakatsu Ohkubo, Kazuhiro Hono. Low-temperature Diffusion Process for Hot-deformed Bulk Permanent Magnet using RE-Cu Eutectic Alloy. IEEJ Transactions on Fundamentals and Materials. 136 [8] (2016) 478-483 10.1541/ieejfms.136.478
  8. S. Kasai, Y. K. Takahashi, P.-H. Cheng, Ikhtiar, T. Ohkubo, K. Kondou, Y. Otani, S. Mitani, K. Hono. Large magnetoresistance in Heusler-alloy-based epitaxial magnetic junctions with semiconducting Cu(In0.8Ga0.2)Se2 spacer. Applied Physics Letters. 109 [3] (2016) 032409 10.1063/1.4959144
  9. S. Jafari, A. Beitollahi, B. Eftekhari Yekta, T. Ohkubo, Viktoria Budinsky, Mie Marsilius, Giselher Herzer, K. Hono. Atom probe analysis and magnetic properties of nanocrystalline Fe84.3Si4B8P3Cu0.7. Journal of Alloys and Compounds. 674 (2016) 136-144 10.1016/j.jallcom.2016.03.005
  10. Yuichi Ohsawa, Naoharu Shimomura, Tadaomi Daibou, Yuzo Kamiguchi, Satoshi Shirotori, Tomoaki Inokuchi, Daisuke Saida, Buyandalai Altansargai, Yushi Kato, Hiroaki Yoda, Tadakatsu Ohkubo, Kazuhiro Hono. Precise Damage Observation in Ion-Beam Etched MTJ. IEEE Transactions on Magnetics. 52 [7] (2016) 1-3 10.1109/tmag.2015.2512588
  11. Y. Hirayama, A.K. Panda, T. Ohkubo, K. Hono. High coercivity Sm 2 Fe 17 N 3 submicron size powder prepared by polymerized-complex and reduction–diffusion process. Scripta Materialia. 120 (2016) 27-30 10.1016/j.scriptamat.2016.03.028
  12. H. Sepehri-Amin, T. Ohkubo, K. Hono. Micromagnetic Simulations of Magnetization Reversals in Nd-Fe-B Based Permanent Magnets. MATERIALS TRANSACTIONS. 57 [8] (2016) 1221-1229 10.2320/matertrans.m2015457
  13. Ikhtiar, S. Kasai, P.-H. Cheng, T. Ohkubo, Y. K. Takahashi, T. Furubayashi, K. Hono. Magnetic tunnel junctions with a rock-salt-type Mg1−xTixO barrier for low resistance area product. Applied Physics Letters. 108 [24] (2016) 242416 10.1063/1.4953783
  14. T. Oikawa, H. Yokota, T. Ohkubo, K. Hono. Large-scale micromagnetic simulation of Nd-Fe-B sintered magnets with Dy-rich shell structures. AIP Advances. 6 [5] (2016) 056006 10.1063/1.4943058
  15. Jun Fujisaki, Atsushi Furuya, Yuji Uehara, Koichi Shimizu, Tadashi Ataka, Tomohiro Tanaka, Hirotaka Oshima, Tadakatsu Ohkubo, Satoshi Hirosawa, Kazuhiro Hono. Micromagnetic simulation of the orientation dependence of grain boundary properties on the coercivity of Nd-Fe-B sintered magnets. AIP Advances. 6 [5] (2016) 056028 10.1063/1.4944773
  16. Lihua Liu, H. Sepehri-Amin, T. Ohkubo, M. Yano, A. Kato, T. Shoji, K. Hono. Coercivity enhancement of hot-deformed Nd-Fe-B magnets by the eutectic grain boundary diffusion process. Journal of Alloys and Compounds. 666 (2016) 432-439 10.1016/j.jallcom.2015.12.227
  17. Yuya Kanitani, Shinji Tanaka, Shigetaka Tomiya, Tadakatsu Ohkubo, Kazuhiro Hono. Atom probe tomography of compositional fluctuation in GaInN layers. Japanese Journal of Applied Physics. 55 [5S] (2016) 05FM04 10.7567/jjap.55.05fm04
  18. Thomas Scheike, Hiroaki Sukegawa, Koichiro Inomata, Tadakatsu Ohkubo, Kazuhiro Hono, Seiji Mitani. Chemical ordering and large tunnel magnetoresistance in Co2FeAl/MgAl2O4/Co2FeAl(001) junctions. Applied Physics Express. 9 [5] (2016) 053004 10.7567/apex.9.053004
  19. Mohamed Belmoubarik, Hiroaki Sukegawa, Tadakatsu Ohkubo, Seiji Mitani, Kazuhiro Hono. MgAl2O4(001) based magnetic tunnel junctions made by direct sputtering of a sintered spinel target. Applied Physics Letters. 108 [13] (2016) 132404 10.1063/1.4945049
  20. Anurag Chaturvedi, Hossein Sepehri-Amin, Tadakatsu Ohkubo, Kazuhiro Hono, Takao Suzuki. Magnetic and structural properties of MnRh thin Films. Journal of Magnetism and Magnetic Materials. 401 (2016) 144-149 10.1016/j.jmmm.2015.10.027
  21. T.T. Sasaki, T. Ohkubo, Y. Takada, T. Sato, A. Kato, Y. Kaneko, K. Hono. Formation of non-ferromagnetic grain boundary phase in a Ga-doped Nd-rich Nd–Fe–B sintered magnet. Scripta Materialia. 113 (2016) 218-221 10.1016/j.scriptamat.2015.10.042
  22. S. Jafari, A. Beitollahi, B. Eftekhari Yekta, T. Ohkubo, Viktoria Budinsky, Mie Marsilius, S. Mollazadeh, Giselher Herzer, K. Hono, JAFARI CHAMKAVI, Sahar, Beitollahi, A., Yekta, B. Eftekhari, OHKUBO, Tadakatsu, Budinsky, Viktoria, Marsilius, Mie, Mollazadeh, S, Herzer, Giselher, HONO, Kazuhiro. Three-dimensional atom probe analysis and magnetic properties of Fe85Cu1Si2B8P4 melt spun ribbons. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. 401 [3] (2016) 1123-1129
  23. 室町 英治, 藤田 高弘, 藤田 大介, 村川 健作, 山内 泰, 三石 和貴, 川喜多 磨美子, 岩井 秀夫, 大久保 忠勝, 川喜多 仁, 北澤 英明, 木本 浩司, クスタンセ オスカル, 倉橋 光紀, 後藤 敦, 坂口 勲, 坂田 修身, 櫻井 健次, 張 晗, 篠原 正, 清水 禎, 清水 智子, 志波 光晴, 鈴木 拓, 関口 隆史, 丹所 正孝, 知京 豊裕, 長田 貴弘, 野口 秀典, 端 健二郎, 宝野 和博, 柳生 進二郎, 山下 良之, 吉川 元起, 吉川 英樹, 吉武 道子, 渡邉 賢, 渡邊 誠. 材料イノベーションを加速する先進計測テクノロジーの現状と動向 物質・材料研究のための先進計測テクノロジー. 調査分析室レポートNIMS-RAO-FY2016-3 [ISBN] 978-4-9900563-7-7. 1 (2016) 42-51
  24. 室町 英治, 藤田 高弘, 藤田 大介, 村川 健作, 山内 泰, 三石 和貴, 川喜多 磨美子, 岩井 秀夫, 大久保 忠勝, 川喜多 仁, 北澤 英明, 木本 浩司, クスタンセ オスカル, 倉橋 光紀, 後藤 敦, 坂口 勲, 坂田 修身, 櫻井 健次, 張 晗, 篠原 正, 清水 禎, 清水 智子, 志波 光晴, 鈴木 拓, 関口 隆史, 丹所 正孝, 知京 豊裕, 長田 貴弘, 野口 秀典, 端 健二郎, 宝野 和博, 柳生 進二郎, 山下 良之, 吉川 元起, 吉川 英樹, 渡邉 賢, 渡邊 誠. 材料イノベーションを加速する先進計測テクノロジーの現状と動向. 調査分析室レポート. (2016) 73-89
2015
  1. Satoshi Okamoto, Ryota Goto, Nobuaki Kikuchi, Osamu Kitakami, Takahiro Akiya, Hossein Sepehri-Amin, Tadakatsu Ohkubo, Kazuhiro Hono, Keiko Hioki, Atsushi Hattori. Temperature-dependent magnetization reversal process and coercivity mechanism in Nd-Fe-B hot-deformed magnets. Journal of Applied Physics. 118 [22] (2015) 223903 10.1063/1.4937274
  2. Jun Liu, Tadakatsu Ohkubo, Seiji Mitani, Kazuhiro Hono, Masamitsu Hayashi. Correlation between the spin Hall angle and the structural phases of early 5d transition metals. Applied Physics Letters. 107 [23] (2015) 232408 10.1063/1.4937452
  3. Y. Murakami, T.T. Sasaki, T. Ohkubo, K. Hono. Strain measurements from Nd2Fe14B grains in sintered magnets using artificial moiré fringes. Acta Materialia. 101 (2015) 101-106 10.1016/j.actamat.2015.08.058
  4. T.T. Sasaki, F.R. Elsayed, T. Nakata, T. Ohkubo, S. Kamado, K. Hono. Strong and ductile heat-treatable Mg–Sn–Zn–Al wrought alloys. Acta Materialia. 99 (2015) 176-186 10.1016/j.actamat.2015.06.060
  5. H. Sepehri-Amin, Lihua Liu, T. Ohkubo, M. Yano, T. Shoji, A. Kato, T. Schrefl, K. Hono. Microstructure and temperature dependent of coercivity of hot-deformed Nd–Fe–B magnets diffusion processed with Pr–Cu alloy. Acta Materialia. 99 (2015) 297-306 10.1016/j.actamat.2015.08.013
  6. Hwachol Lee, Hiroaki Sukegawa, Jun Liu, Tadakatsu Ohkubo, Shinya Kasai, Seiji Mitani, Kazuhiro Hono. Ferromagnetic MnGaN thin films with perpendicular magnetic anisotropy for spintronics applications. Applied Physics Letters. 107 [3] (2015) 032403 10.1063/1.4927097
  7. 大久保 忠勝. Nd-Fe-B磁石の有限要素マイクロマグネティクス解析. 省/脱Dy化ネオジム磁石と新規永久磁石の開発. (2015) 154-164
  8. 佐々木 泰祐, 大久保 忠勝. Nd-Fe-B系磁石のマルチスケール組織解析. 省/脱Dyネオジム磁石と新規永久磁石の開発. (2015) 29-36
  9. O. Akdogan, H. Sepehri-Amin, N. M. Dempsey, T. Ohkubo, K. Hono, O. Gutfleisch, T. Schrefl, D. Givord. Preparation, Characterization, and Modeling of Ultrahigh Coercivity Sm-Co Thin Films. Advanced Electronic Materials. 1 [5] (2015) 1500009 10.1002/aelm.201500009
  10. 佐々木 泰祐, 大久保 忠勝, 宝野 和博. SEM/TEM/3DAPを用いたネオジム磁石のマルチスケール組織解析. 工業と科学. 89 [5] (2015) 123-130
  11. K. Fujii, K. Fukuya, R. Kasada, A. Kimura, T. Ohkubo. Effects of tensile stress on Cu clustering in irradiated Fe–Cu alloy. Journal of Nuclear Materials. 458 (2015) 281-287 10.1016/j.jnucmat.2014.12.108
  12. T.T. Sasaki, T. Ohkubo, Y. Une, H. Kubo, M. Sagawa, K. Hono. Effect of carbon on the coercivity and microstructure in fine-grained Nd–Fe–B sintered magnet. Acta Materialia. 84 (2015) 506-514 10.1016/j.actamat.2014.10.047
  13. H. Sepehri-Amin, T. Ohkubo, K. Hono, K. Güth, O. Gutfleisch. Mechanism of the texture development in hydrogen-disproportionation–desorption-recombination (HDDR) processed Nd–Fe–B powders. Acta Materialia. 85 (2015) 42-52 10.1016/j.actamat.2014.11.003
  14. Jaivardhan Sinha, Maria Gruber, Masaya Kodzuka, Tadakatsu Ohkubo, Seiji Mitani, Kazuhiro Hono, Masamitsu Hayashi. Influence of boron diffusion on the perpendicular magnetic anisotropy in Ta|CoFeB|MgO ultrathin films. Journal of Applied Physics. 117 [4] (2015) 043913 10.1063/1.4906096
  15. J. Liu, H. Sepehri-Amin, T. Ohkubo, K. Hioki, A. Hattori, T. Schrefl, K. Hono. Grain size dependence of coercivity of hot-deformed Nd–Fe–B anisotropic magnets. Acta Materialia. 82 (2015) 336-343 10.1016/j.actamat.2014.09.021
2014
  1. Thomas Scheike, Hiroaki Sukegawa, Takao Furubayashi, Zhenchao Wen, Koichiro Inomata, Tadakatsu Ohkubo, Kazuhiro Hono, Seiji Mitani. Lattice-matched magnetic tunnel junctions using a Heusler alloy Co2FeAl and a cation-disorder spinel Mg-Al-O barrier. Applied Physics Letters. 105 [24] (2014) 242407 10.1063/1.4904716
  2. J.P. Hadorn, T.T. Sasaki, T. Nakata, T. Ohkubo, S. Kamado, K. Hono. Solute clustering and grain boundary segregation in extruded dilute Mg–Gd alloys. Scripta Materialia. 93 (2014) 28-31 10.1016/j.scriptamat.2014.08.022
  3. U.M.R. Seelam, T. Ohkubo, T. Abe, S. Hirosawa, K. Hono. Faceted shell structure in grain boundary diffusion-processed sintered Nd–Fe–B magnets. Journal of Alloys and Compounds. 617 (2014) 884-892 10.1016/j.jallcom.2014.07.166
  4. T. Nakamura, A. Yasui, Y. Kotani, T. Fukagawa, T. Nishiuchi, H. Iwai, T. Akiya, T. Ohkubo, Y. Gohda, K. Hono, S. Hirosawa. Direct observation of ferromagnetism in grain boundary phase of Nd-Fe-B sintered magnet using soft x-ray magnetic circular dichroism. Applied Physics Letters. 105 [20] (2014) 202404 10.1063/1.4902329
  5. Jun Fujisaki, Atsushi Furuya, Yuji Uehara, Koichi Shimizu, Hirotaka Oshima, Tadakatsu Ohkubo, Satoshi Hirosawa, Kazuhiro Hono. Micromagnetic Simulations of Magnetization Reversal in Misaligned Multigrain Magnets With Various Grain Boundary Properties Using Large-Scale Parallel Computing. IEEE Transactions on Magnetics. 50 [11] (2014) 1-4 10.1109/tmag.2014.2326176
  6. Zhenchao Wen, Hiroaki Sukegawa, Takao Furubayashi, Jungwoo Koo, Koichiro Inomata, Seiji Mitani, Jason Paul Hadorn, Tadakatsu Ohkubo, Kazuhiro Hono. A 4-Fold-Symmetry Hexagonal Ruthenium for Magnetic Heterostructures Exhibiting Enhanced Perpendicular Magnetic Anisotropy and Tunnel Magnetoresistance. Advanced Materials. 26 [37] (2014) 6483-6490 10.1002/adma.201401959
  7. H. Sepehri-Amin, T. Ohkubo, M. Gruber, T. Schrefl, K. Hono. Micromagnetic simulations on the grain size dependence of coercivity in anisotropic Nd–Fe–B sintered magnets. Scripta Materialia. 89 (2014) 29-32 10.1016/j.scriptamat.2014.06.020
  8. T. Bhattacharjee, B.-C Suh, T.T. Sasaki, T. Ohkubo, N.J. Kim, K. Hono. High strength and formable Mg–6.2Zn–0.5Zr–0.2Ca alloy sheet processed by twin roll casting. Materials Science and Engineering: A. 609 (2014) 154-160 10.1016/j.msea.2014.04.058
  9. Y. Murakami, T. Tanigaki, T.T. Sasaki, Y. Takeno, H.S. Park, T. Matsuda, T. Ohkubo, K. Hono, D. Shindo. Magnetism of ultrathin intergranular boundary regions in Nd–Fe–B permanent magnets. Acta Materialia. 71 (2014) 370-379 10.1016/j.actamat.2014.03.013
  10. T. Akiya, J. Liu, H. Sepehri-Amin, T. Ohkubo, K. Hioki, A. Hattori, K. Hono. High-coercivity hot-deformed Nd–Fe–B permanent magnets processed by Nd–Cu eutectic diffusion under expansion constraint. Scripta Materialia. 81 (2014) 48-51 10.1016/j.scriptamat.2014.03.002
  11. T. Akiya, J. Liu, H. Sepehri-Amin, T. Ohkubo, K. Hioki, A. Hattori, K. Hono. Low temperature diffusion process using rare earth-Cu eutectic alloys for hot-deformed Nd-Fe-B bulk magnets. Journal of Applied Physics. 115 [17] (2014) 17A766 10.1063/1.4869062
  12. Ikhtiar, S. Kasai, A. Itoh, Y. K. Takahashi, T. Ohkubo, S. Mitani, K. Hono. Magneto-transport and microstructure of Co2Fe(Ga0.5Ge0.5)/Cu lateral spin valves prepared by top-down microfabrication process. Journal of Applied Physics. 115 [17] (2014) 173912 10.1063/1.4874936
  13. J. Liu, H. Sepehri-Amin, T. Ohkubo, K. Hioki, A. Hattori, K. Hono. Microstructure evolution of hot-deformed Nd-Fe-B anisotropic magnets. Journal of Applied Physics. 115 [17] (2014) 17A744 10.1063/1.4867960
  14. S. Jafari, A. Beitollahi, B. EftekhariYekta, Keiu Kanada, T. Ohkubo, R. Gopalan, Giselher Herzer, K. Hono. Microstructural and magnetic properties study of Fe–P rolled sheet alloys. Journal of Magnetism and Magnetic Materials. 358-359 (2014) 38-43 10.1016/j.jmmm.2014.01.032
  15. T. Kinno, M. Tomita, T. Ohkubo, S. Takeno, K. Hono. Laser-assisted atom probe tomography of 18O-enriched oxide thin film for quantitative analysis of oxygen. Applied Surface Science. 290 (2014) 194-198 10.1016/j.apsusc.2013.11.039
2013
  1. F.R. Elsayed, T.T. Sasaki, T. Ohkubo, H. Takahashi, S.W. Xu, S. Kamado, K. Hono. Effect of extrusion conditions on microstructure and mechanical properties of microalloyed Mg–Sn–Al–Zn alloys. Materials Science and Engineering: A. 588 (2013) 318-328 10.1016/j.msea.2013.09.050
  2. J. W. Koo, S. Mitani, T. T. Sasaki, H. Sukegawa, Z. C. Wen, T. Ohkubo, T. Niizeki, K. Inomata, K. Hono. Large perpendicular magnetic anisotropy at Fe/MgO interface. Applied Physics Letters. 103 [19] (2013) 192401 10.1063/1.4828658
  3. Takayuki Nozaki, Tadakatsu Ohkubo, Yoichi Shiota, Hitoshi Kubota, Akio Fukushima, Kazuhiro Hono, Yoshishige Suzuki, Shinji Yuasa. Growth of a High-Quality Ultrathin Fe(001) Layer on MgO(001) by Insertion of an Ultrathin γ-Fe2O3Layer. Applied Physics Express. 6 [11] (2013) 113004 10.7567/apex.6.113004
  4. Jun Takahashi, Naoki Maruyama, Kazuto Kawakami, Naoki Yoshinaga, Masaaki Sugiyama, Tadakatsu Ohkubo, De-hai Ping, Kazuhiro Hono. Atom probe analysis on interaction between Cr and N in bake-hardening steels with anti-aging properties at RT. Materials Science and Engineering: A. 585 (2013) 100-107 10.1016/j.msea.2013.07.039
  5. H. Sepehri-Amin, J. Liu, T. Ohkubo, K. Hioki, A. Hattori, K. Hono. Enhancement of coercivity of hot-deformed Nd–Fe–B anisotropic magnet by low-temperature grain boundary diffusion of Nd60Dy20Cu20 eutectic alloy. Scripta Materialia. 69 [9] (2013) 647-650 10.1016/j.scriptamat.2013.07.011
  6. Takeshi Toyama, Yasuyoshi Nagai, Abderrahim Al Mazouzi, Masahiko Hatakeyama, Masayuki Hasegawa, Tadakatsu Ohkubo, Eric Van Walle, Robert Gerard. Intergranular Segregation in the Pressure Vessel Steel of a Commercial Nuclear Reactor Studied by Atom Probe Tomography. MATERIALS TRANSACTIONS. 54 [11] (2013) 2119-2124 10.2320/matertrans.m2013133
  7. H. Sepehri-Amin, T. Ohkubo, S. Nagashima, M. Yano, T. Shoji, A. Kato, T. Schrefl, K. Hono. High-coercivity ultrafine-grained anisotropic Nd–Fe–B magnets processed by hot deformation and the Nd–Cu grain boundary diffusion process. Acta Materialia. 61 [17] (2013) 6622-6634 10.1016/j.actamat.2013.07.049
  8. Hiroaki Sukegawa, Seiji Mitani, Tadakatsu Ohkubo, Koichiro Inomata, Kazuhiro Hono. Low-resistive monocrystalline Mg-Al-O barrier magnetic tunnel junctions for spin-transfer magnetization switching. Applied Physics Letters. 103 [14] (2013) 142409 10.1063/1.4824134
  9. T. Akiya, T.T. Sasaki, T. Ohkubo, Y. Une, M. Sagawa, H. Kato, K. Hono. The origin of the coercivity reduction of Nd–Fe–B sintered magnet annealed below an optimal temperature. Journal of Magnetism and Magnetic Materials. 342 (2013) 4-10 10.1016/j.jmmm.2013.04.044
  10. T.T. Sasaki, T. Ohkubo, K. Hono, Y. Une, M. Sagawa. Correlative multi-scale characterization of a fine grained Nd–Fe–B sintered magnet. Ultramicroscopy. 132 (2013) 222-226 10.1016/j.ultramic.2013.01.006
  11. J. Liu, H. Sepehri-Amin, T. Ohkubo, K. Hioki, A. Hattori, T. Schrefl, K. Hono. Effect of Nd content on the microstructure and coercivity of hot-deformed Nd–Fe–B permanent magnets. Acta Materialia. 61 [14] (2013) 5387-5399 10.1016/j.actamat.2013.05.027
  12. T. Bhattacharjee, C.L. Mendis, K. Oh-ishi, T. Ohkubo, K. Hono. The effect of Ag and Ca additions on the age hardening response of Mg–Zn alloys. Materials Science and Engineering: A. 575 (2013) 231-240 10.1016/j.msea.2013.03.069
  13. H. Sepehri-Amin, T. Ohkubo, M. Kodzuka, H. Yamamura, T. Saito, H. Iba, K. Hono. Evidence for nano-Si clusters in amorphous SiO anode materials for rechargeable Li-ion batteries. Scripta Materialia. 69 [1] (2013) 92-95 10.1016/j.scriptamat.2013.02.040
  14. Y. K. Takahashi, N. Hase, M. Kodzuka, A. Itoh, T. Koganezawa, T. Furubayashi, S. Li, B. S. D. Ch. S. Varaprasad, T. Ohkubo, K. Hono. Structure and magnetoresistance of current-perpendicular-to-plane pseudo spin valves using Co2Mn(Ga0.25Ge0.75) Heusler alloy. Journal of Applied Physics. 113 [22] (2013) 223901 10.1063/1.4809643
  15. F.R. Elsayed, T.T. Sasaki, C.L. Mendis, T. Ohkubo, K. Hono. Significant enhancement of the age-hardening response in Mg–10Sn–3Al–1Zn alloy by Na microalloying. Scripta Materialia. 68 [10] (2013) 797-800 10.1016/j.scriptamat.2013.01.032
  16. H. Sepehri-Amin, T. Ohkubo, K. Hono. The mechanism of coercivity enhancement by the grain boundary diffusion process of Nd–Fe–B sintered magnets. Acta Materialia. 61 [6] (2013) 1982-1990 10.1016/j.actamat.2012.12.018
  17. F.R. Elsayed, T.T. Sasaki, C.L. Mendis, T. Ohkubo, K. Hono. Compositional optimization of Mg–Sn–Al alloys for higher age hardening response. Materials Science and Engineering: A. 566 (2013) 22-29 10.1016/j.msea.2012.12.041
  18. H. Sepehri-Amin, D. Prabhu, M. Hayashi, T. Ohkubo, K. Hioki, A. Hattori, K. Hono. Coercivity enhancement of rapidly solidified Nd–Fe–B magnet powders. Scripta Materialia. 68 [3-4] (2013) 167-170 10.1016/j.scriptamat.2012.10.005
2012
  1. T. Bhattacharjee, C.L. Mendis, T.T. Sasaki, T. Ohkubo, K. Hono. Effect of Zr addition on the precipitation in Mg–Zn-based alloy. Scripta Materialia. 67 [12] (2012) 967-970 10.1016/j.scriptamat.2012.08.031
  2. H. Tamura, M. Tsukada, K. P. McKenna, A. L. Shluger, T. Ohkubo, K. Hono. Laser-assisted field evaporation from insulators triggered by photoinduced hole accumulation. Physical Review B. 86 [19] (2012) 10.1103/physrevb.86.195430
  3. Hiroaki Sukegawa, Yoshio Miura, Shingo Muramoto, Seiji Mitani, Tomohiko Niizeki, Tadakatsu Ohkubo, Kazutaka Abe, Masafumi Shirai, Koichiro Inomata, Kazuhiro Hono. Enhanced tunnel magnetoresistance in a spinel oxide barrier with cation-site disorder. Physical Review B. 86 [18] (2012) 10.1103/physrevb.86.184401
  4. Pham Nam Hai, Le Duc Anh, Shyam Mohan, Tsuyoshi Tamegai, Masaya Kodzuka, Tadakatsu Ohkubo, Kazuhiro Hono, Masaaki Tanaka. Growth and characterization of n-type electron-induced ferromagnetic semiconductor (In,Fe)As. Applied Physics Letters. 101 [18] (2012) 182403 10.1063/1.4764947
  5. C.L. Mendis, K. Oh-ishi, T. Ohkubo, K.S. Shin, K. Hono. Microstructures and mechanical properties of extruded and heat treated Mg–6Zn–1Si–0.5Mn alloys. Materials Science and Engineering: A. 553 (2012) 1-9 10.1016/j.msea.2012.05.058
  6. T. Toyama, Z. Tang, K. Inoue, T. Chiba, T. Ohkubo, K. Hono, Y. Nagai, M. Hasegawa. Size estimation of embedded Cu nanoprecipitates in Fe by using affinitively trapped positrons. Physical Review B. 86 [10] (2012) 10.1103/physrevb.86.104106
  7. Uma Maheswara Rao Seelam, C. Suryanarayana, Helge Heinrich, Tadakatsu Ohkubo, Kazuhiro Hono, N. S. Cheruvu. Structural Characterization of Sputter-Deposited 304 Stainless Steel+10 wt pct Al Coatings. Metallurgical and Materials Transactions A. 43 [8] (2012) 2945-2954 10.1007/s11661-012-1128-2
  8. Naoki Matsui, Naoyuki Sano, Junsuke Fujiwara, Keiichiro Ohishi, Tadakatsu Ohkubo, Kazuhiro Hono. Microscopic Observation of the Interface between a Tool Surface and Deposits of Low-Carbon Free Cutting Steel. MATERIALS TRANSACTIONS. 53 [6] (2012) 1130-1137 10.2320/matertrans.m2012034
  9. S. V. Karthik, Y. K. Takahashi, T. Ohkubo, K. Hono, H. D. Gan, S. Ikeda, H. Ohno. Transmission electron microscopy study on the effect of various capping layers on CoFeB/MgO/CoFeB pseudo spin valves annealed at different temperatures. Journal of Applied Physics. 111 [8] (2012) 083922 10.1063/1.4707964
  10. M. Kodzuka, T. Ohkubo, K. Hono, S. Ikeda, H. D. Gan, H. Ohno. Effects of boron composition on tunneling magnetoresistance ratio and microstructure of CoFeB/MgO/CoFeB pseudo-spin-valve magnetic tunnel junctions. Journal of Applied Physics. 111 [4] (2012) 043913 10.1063/1.3688039
  11. C.L. Mendis, K. Oh-ishi, T. Ohkubo, K. Hono. Effect of Li additions on the age hardening response and precipitate microstructures of Mg–2.4Zn–0.16Zr based alloys. Materials Science and Engineering: A. 535 (2012) 122-128 10.1016/j.msea.2011.12.051
  12. H. Sepehri-Amin, T. Ohkubo, T. Shima, K. Hono. Grain boundary and interface chemistry of an Nd–Fe–B-based sintered magnet. Acta Materialia. 60 [3] (2012) 819-830 10.1016/j.actamat.2011.10.043
  13. K. Hono, T. Ohkubo, H. Sepehri-Amin. Microstructure-Coercivity Relationships of Nd-Fe-B Base Permanent Magnets. Journal of the Japan Institute of Metals. 76 [1] (2012) 2-11 10.2320/jinstmet.76.2
2011
  1. T.T. Sasaki, K. Oh-ishi, T. Ohkubo, K. Hono. Effect of double aging and microalloying on the age hardening behavior of a Mg–Sn–Zn alloy. Materials Science and Engineering: A. 530 (2011) 1-8 10.1016/j.msea.2010.05.010
  2. B. Gault, Y. M. Chen, M. P. Moody, T. Ohkubo, K. Hono, S. P. Ringer. Influence of the wavelength on the spatial resolution of pulsed-laser atom probe. Journal of Applied Physics. 110 [9] (2011) 094901 10.1063/1.3657846
  3. Kimihiro Nogiwa, Akihiko Nishimura, Atsushi Yokoyama, Satoshi Ohtsuka, Takaji Kaito, Masaki Inoue, Tadakatsu Ohkubo, Kazuhiro Hono. Characterization of the microstructure of dual-phase 9Cr-ODS steels using a laser-assisted 3D atom probe. Journal of Nuclear Materials. 417 [1-3] (2011) 201-204 10.1016/j.jnucmat.2010.12.053
  4. Katsuhiko Fujii, Tadakatsu Ohkubo, Koji Fukuya. Effects of solute elements on irradiation hardening and microstructural evolution in low alloy steels. Journal of Nuclear Materials. 417 [1-3] (2011) 949-952 10.1016/j.jnucmat.2010.12.192
  5. H. Sepehri-Amin, Y. Une, T. Ohkubo, K. Hono, M. Sagawa. Microstructure of fine-grained Nd–Fe–B sintered magnets with high coercivity. Scripta Materialia. 65 [5] (2011) 396-399 10.1016/j.scriptamat.2011.05.006
  6. Naoki Matsui, Naoyuki Sano, Junsuke Fujiwara, Keiichiro Ohishi, Tadakatsu Ohkubo, Kazuhiro Hono. Microscopic Observation of the Interface between a Tool Wear Surface and Deposits from a Low Carbon Free Cutting Steel Machined. Journal of the Japan Institute of Metals. 75 [9] (2011) 516-523 10.2320/jinstmet.75.516
  7. 大久保 忠勝, 陳 一萌, 小塚 雅也, 宝野 和博. レーザーアトムプローブによる絶縁体材料のナノ解析. まてりあ. 50 [9] (2011) 397-403
  8. Junji Saida, Takashi Sanada, Shigeo Sato, Muneyuki Imafuku, Masato Ohnuma, Tadakatsu Ohkubo, Kazuhiro Hono, Eiichiro Matsubara. Change in local environment upon quasicrystallization of Zr–Cu glassy alloys by addition of Pd and Pt. Journal of Physics: Condensed Matter. 23 [17] (2011) 175303 10.1088/0953-8984/23/17/175303
  9. Shigetaka Tomiya, Yuya Kanitani, Shinji Tanaka, Tadakatsu Ohkubo, Kazuhiro Hono. Atomic scale characterization of GaInN/GaN multiple quantum wells in V-shaped pits. Applied Physics Letters. 98 [18] (2011) 181904 10.1063/1.3585118
  10. M. Tsukada, H. Tamura, K.P. McKenna, A.L. Shluger, Y.M. Chen, T. Ohkubo, K. Hono. Mechanism of laser assisted field evaporation from insulating oxides. Ultramicroscopy. 111 [6] (2011) 567-570 10.1016/j.ultramic.2010.11.011
  11. W.F. Li, H. Sepehri-Amin, T. Ohkubo, N. Hase, K. Hono. Distribution of Dy in high-coercivity (Nd,Dy)–Fe–B sintered magnet. Acta Materialia. 59 [8] (2011) 3061-3069 10.1016/j.actamat.2011.01.046
  12. F. Li, T. Ohkubo, Y.M. Chen, M. Kodzuka, K. Hono. Quantitative atom probe analyses of rare-earth-doped ceria by femtosecond pulsed laser. Ultramicroscopy. 111 [6] (2011) 589-594 10.1016/j.ultramic.2010.12.011
  13. H. Sepehri-Amin, T. Ohkubo, T. Nishiuchi, S. Hirosawa, K. Hono. Quantitative laser atom probe analyses of hydrogenation-disproportionated Nd–Fe–B powders. Ultramicroscopy. 111 [6] (2011) 615-618 10.1016/j.ultramic.2010.11.015
  14. K. Hono, T. Ohkubo, Y.M. Chen, M. Kodzuka, K. Oh-ishi, H. Sepehri-Amin, F. Li, T. Kinno, S. Tomiya, Y. Kanitani. Broadening the applications of the atom probe technique by ultraviolet femtosecond laser. Ultramicroscopy. 111 [6] (2011) 576-583 10.1016/j.ultramic.2010.11.020
  15. K. Oh-ishi, C.L. Mendis, T. Ohkubo, K. Hono. Effect of laser power and specimen temperature on atom probe analyses of magnesium alloys. Ultramicroscopy. 111 [6] (2011) 715-718 10.1016/j.ultramic.2011.01.002
  16. Y.M. Chen, T Ohkubo, K Hono. Laser assisted field evaporation of oxides in atom probe analysis. Ultramicroscopy. 111 [6] (2011) 562-566 10.1016/j.ultramic.2010.12.013
  17. M. Kodzuka, T. Ohkubo, K. Hono. Laser assisted atom probe analysis of thin film on insulating substrate. Ultramicroscopy. 111 [6] (2011) 557-561 10.1016/j.ultramic.2010.11.008
  18. H. Sukegawa, H. Xiu, T. Ohkubo, T. Niizeki, S. Kasai, T. Furubayashi, S. Mitani, K. Inomata, K. Hono. Crystallinity and Transport Properties in Fe/MgAl2O4/Fe (001) Epitaxial Magnetic Tunnel Junctions. Journal of the Magnetics Society of Japan. 35 [3] (2011) 254-259 10.3379/msjmag.1104r011
  19. C.L. Mendis, K. Oh-ishi, T. Ohkubo, K. Hono. Precipitation of prismatic plates in Mg–0.3Ca alloys with In additions. Scripta Materialia. 64 [2] (2011) 137-140 10.1016/j.scriptamat.2010.09.028
  20. N. Nozawa, H. Sepehri-Amin, T. Ohkubo, K. Hono, T. Nishiuchi, S. Hirosawa. Coercivity enhancement of HDDR-processed Nd–Fe–B permanent magnet with the rapid hot-press consolidation process. Journal of Magnetism and Magnetic Materials. 323 [1] (2011) 115-121 10.1016/j.jmmm.2010.08.043
  21. S Yamamuro, M Okano, T Tanaka, K Sumiyama, N Nozawa, T Nishiuchi, S Hirosawa, T Ohkubo. Direct Iron Coating onto Nd-Fe-B Powder by Thermal Decomposition of Iron Pentacarbonyl. Journal of Physics: Conference Series. 266 (2011) 012050 10.1088/1742-6596/266/1/012050
2010
  1. K. Fujii, K. Fukuya, R. Kasada, A. Kimura, T. Ohkubo. Effects of stress on radiation hardening and microstructural evolution in A533B steel. Journal of Nuclear Materials. 407 [3] (2010) 151-156 10.1016/j.jnucmat.2010.09.055
  2. 高橋 有紀子, 古林 孝夫, 大久保 忠勝, 宝野 和博. スピントロニクス材料のナノ構造解析と特性制御. まてりあ. 49 [12] (2010) 580-584
  3. R. Gopalan, T. Ohkubo, K. Hono. High coercivity FePt–C bulk magnet processed by spark plasma sintering and hot deformation. Journal of Magnetism and Magnetic Materials. 322 [21] (2010) 3423-3427 10.1016/j.jmmm.2010.06.039
  4. H. Sepehri-Amin, T. Ohkubo, T. Nishiuchi, S. Hirosawa, K. Hono. Coercivity enhancement of hydrogenation–disproportionation–desorption–recombination processed Nd–Fe–B powders by the diffusion of Nd–Cu eutectic alloys. Scripta Materialia. 63 [11] (2010) 1124-1127 10.1016/j.scriptamat.2010.08.021
  5. T. Fukagawa, T. Ohkubo, S. Hirosawa, K. Hono. Nano-sized disorders in hard magnetic grains and their influence on magnetization reversal at artificial Nd/Nd2Fe14B interfaces. Journal of Magnetism and Magnetic Materials. 322 [21] (2010) 3346-3350 10.1016/j.jmmm.2010.06.023
  6. T. Toyama, N. Tsuchiya, Y. Nagai, A. Almazouzi, M. Hatakeyama, M. Hasegawa, T. Ohkubo, E. van Walle, R. Gerard. Irradiation-induced changes of the atomic distributions around the interfaces of carbides in a nuclear reactor pressure vessel steel. Journal of Nuclear Materials. 405 [2] (2010) 177-180 10.1016/j.jnucmat.2010.08.011
  7. J. Jayaraj, C.L. Mendis, T. Ohkubo, K. Oh-ishi, K. Hono. Enhanced precipitation hardening of Mg–Ca alloy by Al addition. Scripta Materialia. 63 [8] (2010) 831-834 10.1016/j.scriptamat.2010.06.028
  8. Han Zhang, Jie Tang, Jinshi Yuan, Jun Ma, Norio Shinya, Kiyomi Nakajima, Hideyuki Murakami, Tadakatsu Ohkubo, Lu-Chang Qin. Nanostructured LaB6Field Emitter with Lowest Apical Work Function. Nano Letters. 10 [9] (2010) 3539-3544 10.1021/nl101752z
  9. M. Esfahani, R. Gholamipour, SH. Mirdamadi, A. Abdolhoseini, T. Ohkubo. Effects of Ti and C additions on the nanostructure and magnetic properties of (Nd, Pr)– (Fe, Co, Ga)–B melt-spun nanocomposite ribbons. Physica B: Condensed Matter. 405 [18] (2010) 3838-3841 10.1016/j.physb.2010.06.013
  10. F. Li, T. Ohkubo, Y.M. Chen, M. Kodzuka, F. Ye, D.R. Ou, T. Mori, K. Hono. Laser-assisted three-dimensional atom probe analysis of dopant distribution in Gd-doped CeO2. Scripta Materialia. 63 [3] (2010) 332-335 10.1016/j.scriptamat.2010.04.029
  11. T. Takeuchi, A. Kuramoto, J. Kameda, T. Toyama, Y. Nagai, M. Hasegawa, T. Ohkubo, T. Yoshiie, Y. Nishiyama, K. Onizawa. Effects of chemical composition and dose on microstructure evolution and hardening of neutron-irradiated reactor pressure vessel steels. Journal of Nuclear Materials. 402 [2-3] (2010) 93-101 10.1016/j.jnucmat.2010.04.008
  12. Atsushi Sugihara, Masaya Kodzuka, Kay Yakushiji, Hitoshi Kubota, Shinji Yuasa, Atsushi Yamamoto, Koji Ando, Koki Takanashi, Tadakatsu Ohkubo, Kazuhiro Hono, Akio Fukushima. Giant Peltier Effect in a Submicron-Sized Cu–Ni/Au Junction with Nanometer-Scale Phase Separation. Applied Physics Express. 3 [6] (2010) 065204 10.1143/apex.3.065204
  13. Hiroaki Sukegawa, Huixin Xiu, Tadakatsu Ohkubo, Takao Furubayashi, Tomohiko Niizeki, Wenhong Wang, Shinya Kasai, Seiji Mitani, Koichiro Inomata, Kazuhiro Hono. Tunnel magnetoresistance with improved bias voltage dependence in lattice-matched Fe/spinel MgAl2O4/Fe(001) junctions. Applied Physics Letters. 96 [21] (2010) 212505 10.1063/1.3441409
  14. H. D. Gan, S. Ikeda, W. Shiga, J. Hayakawa, K. Miura, H. Yamamoto, H. Hasegawa, F. Matsukura, T. Ohkubo, K. Hono, H. Ohno. Tunnel magnetoresistance properties and film structures of double MgO barrier magnetic tunnel junctions. Applied Physics Letters. 96 [19] (2010) 192507 10.1063/1.3429594
  15. K. Fujii, H. Nakata, K. Fukuya, T. Ohkubo, K. Hono, Y. Nagai, M. Hasegawa, T. Yoshiie. Hardening and microstructural evolution in A533B steels under neutron irradiation and a direct comparison with electron irradiation. Journal of Nuclear Materials. 400 [1] (2010) 46-55 10.1016/j.jnucmat.2010.02.008
  16. M. Kohda, O. Haruyama, T. Ohkubo, T. Egami. Kinetics of volume and enthalpy relaxation inPt60Ni15P25bulk metallic glass. Physical Review B. 81 [9] (2010) 10.1103/physrevb.81.092203
  17. H. Sepehri-Amin, W.F. Li, T. Ohkubo, T. Nishiuchi, S. Hirosawa, K. Hono. Effect of Ga addition on the microstructure and magnetic properties of hydrogenation–disproportionation–desorption–recombination processed Nd–Fe–B powder. Acta Materialia. 58 [4] (2010) 1309-1316 10.1016/j.actamat.2009.10.035
2009
  1. B.J. Park, Y.M. Chen, T. Ohkubo. Metallic porous materials' design with phase separation in Fe–Cu and Co–Cu systems. Intermetallics. 17 [11] (2009) 958-961 10.1016/j.intermet.2009.04.011
  2. K. Suresh, T. Ohkubo, Y.K. Takahashi, K. Oh-ishi, R. Gopalan, K. Hono, T. Nishiuchi, N. Nozawa, S. Hirosawa. Consolidation of hydrogenation–disproportionation–desorption–recombination processed Nd–Fe–B magnets by spark plasma sintering. Journal of Magnetism and Magnetic Materials. 321 [22] (2009) 3681-3686 10.1016/j.jmmm.2009.07.010
  3. R. Gopalan, H. Sepehri-Amin, K. Suresh, T. Ohkubo, K. Hono, T. Nishiuchi, N. Nozawa, S. Hirosawa. Anisotropic Nd–Fe–B nanocrystalline magnets processed by spark plasma sintering and in situ hot pressing of hydrogenation–decomposition–desorption–recombination powder. Scripta Materialia. 61 [10] (2009) 978-981 10.1016/j.scriptamat.2009.08.007
  4. M. Nezakat, R. Gholamipour, A. Amadeh, A. Mohammadi, T. Ohkubo. Corrosion behavior of Nd9.4Pr0.6Febal.Co6B6Ga0.5TixCx (x=0, 1.5, 3, 6) nanocomposites annealed melt-spun ribbons. Journal of Magnetism and Magnetic Materials. 321 [20] (2009) 3391-3395 10.1016/j.jmmm.2009.06.053
  5. Y.M. Chen, T. Ohkubo, M. Kodzuka, K. Morita, K. Hono. Laser-assisted atom probe analysis of zirconia/spinel nanocomposite ceramics. Scripta Materialia. 61 [7] (2009) 693-696 10.1016/j.scriptamat.2009.05.043
  6. K. Oh-ishi, C.L. Mendis, T. Homma, S. Kamado, T. Ohkubo, K. Hono. Bimodally grained microstructure development during hot extrusion of Mg–2.4 Zn–0.1 Ag–0.1 Ca–0.16 Zr (at.%) alloys. Acta Materialia. 57 [18] (2009) 5593-5604 10.1016/j.actamat.2009.07.057
  7. R. Gopalan, Y.M. Chen, T. Ohkubo, K. Hono. High saturation magnetization and microstructure in melt-spun Fe–P ribbons. Scripta Materialia. 61 [5] (2009) 544-547 10.1016/j.scriptamat.2009.05.022
  8. Y.M. Chen, T. Ohkubo, M. Ohta, Y. Yoshizawa, K. Hono. Three-dimensional atom probe study of Fe–B-based nanocrystalline soft magnetic materials. Acta Materialia. 57 [15] (2009) 4463-4472 10.1016/j.actamat.2009.06.008
  9. Takeshi Toyama, Yasuyoshi Nagai, Zheng Tang, Koji Inoue, Toshinobu Chiba, Masayuki Hasegawa, Tadakatsu Ohkubo, Kazuhiro Hono. A New Method for Size Estimation of Cu Nano-precipitates in Fe Based on Positron Quantum-dot Confinement. Tetsu-to-Hagane. 95 [2] (2009) 118-123 10.2355/tetsutohagane.95.118
  10. S. V. Karthik, Y. K. Takahashi, T. Ohkubo, K. Hono, S. Ikeda, H. Ohno. Transmission electron microscopy investigation of CoFeB/MgO/CoFeB pseudospin valves annealed at different temperatures. Journal of Applied Physics. 106 [2] (2009) 023920 10.1063/1.3182817
  11. T.T. Sasaki, T. Ohkubo, K. Hono. Microstructure and mechanical properties of bulk nanocrystalline Al–Fe alloy processed by mechanical alloying and spark plasma sintering. Acta Materialia. 57 [12] (2009) 3529-3538 10.1016/j.actamat.2009.04.012
  12. Golden Kumar, Tadakatsu Ohkubo, Kazuhiro Hono. Effect of melt temperature on the mechanical properties of bulk metallic glasses. Journal of Materials Research. 24 [07] (2009) 2353-2360 10.1557/jmr.2009.0272
  13. T.T. Sasaki, T. Ohkubo, K. Hono. Precipitation hardenable Mg–Bi–Zn alloys with prismatic plate precipitates. Scripta Materialia. 61 [1] (2009) 72-75 10.1016/j.scriptamat.2009.03.015
  14. B. Srinivasarao, K. Oh-ishi, T. Ohkubo, K. Hono. Bimodally grained high-strength Fe fabricated by mechanical alloying and spark plasma sintering. Acta Materialia. 57 [11] (2009) 3277-3286 10.1016/j.actamat.2009.03.034
  15. R. Shan, H. Sukegawa, W. H. Wang, M. Kodzuka, T. Furubayashi, T. Ohkubo, S. Mitani, K. Inomata, K. Hono. Demonstration of Half-Metallicity in Fermi-Level-Tuned Heusler AlloyCo2FeAl0.5Si0.5at Room Temperature. Physical Review Letters. 102 [24] (2009) 10.1103/physrevlett.102.246601
  16. W.F. Li, T. Ohkubo, K. Hono, M. Sagawa. The origin of coercivity decrease in fine grained Nd–Fe–B sintered magnets. Journal of Magnetism and Magnetic Materials. 321 [8] (2009) 1100-1105 10.1016/j.jmmm.2008.10.032
  17. S. Hirosawa, T. Nishiuchi, T. Ohkubo, W. F. Li, K. Hono, J. Yamazaki, M. Takezawa, K. Sumiyama, S. Yamamuro. Purpose and Objectives of “Project for High Performance Anisotropic Nanocomposite Permanent Magnets with Low Rare-Earth Content”. Journal of the Japan Institute of Metals. 73 [3] (2009) 135-140 10.2320/jinstmet.73.135
  18. W.F. Li, T. Ohkubo, K. Hono. Effect of post-sinter annealing on the coercivity and microstructure of Nd–Fe–B permanent magnets. Acta Materialia. 57 [5] (2009) 1337-1346 10.1016/j.actamat.2008.11.019
  19. W.F. Li, T. Ohkubo, T. Akiya, H. Kato, K. Hono. The role of Cu addition in the coercivity enhancement of sintered Nd-Fe-B permanent magnets. Journal of Materials Research. 24 [02] (2009) 413-420 10.1557/jmr.2009.0041
  20. P.R. Ohodnicki, Y.L. Qin, D.E. Laughlin, M.E. McHenry, M. Kodzuka, T. Ohkubo, K. Hono, M.A. Willard. Composition and non-equilibrium crystallization in partially devitrified co-rich soft magnetic nanocomposite alloys. Acta Materialia. 57 [1] (2009) 87-96 10.1016/j.actamat.2008.08.051
  21. Shigetaka Tomiya, Masao Ikeda, Shinji Tanaka, Yuya Kanitani, Tadakatsu Ohkubo, Kazuhiro Hono. Structural Defects in GaN-based Materials and Their Relation to GaN-based Laser Diodes. MRS Proceedings. 1195 (2009) 10.1557/proc-1195-b01-05
  22. Y.M. Chen, T. Ohkubo, T. Mukai, K. Hono. Structure of shear bands in Pd40Ni40P20 bulk metallic glass. Journal of Materials Research. 24 [01] (2009) 1-9 10.1557/jmr.2009.0001
  23. Tadakatsu Ohkubo, Yimeng M. Chen, Masaya Kodzuka, Fang Li, Keiichiro Oh-ishi, Kazuhiro Hono. Laser-Assisted Atom Probe Analysis of Bulk Insulating Ceramics. MRS Proceedings. 1231 (2009) 10.1557/proc-1231-nn02-09
2008
  1. 大久保 忠勝, 宝野 和博. 3次元アトムプローブ法とその故障解析への応用. LSIテスティングハンドブック. (2008) 401-407
  2. K. Mondal, T. Ohkubo, T. Toyama, Y. Nagai, M. Hasegawa, K. Hono. The effect of nanocrystallization and free volume on the room temperature plasticity of Zr-based bulk metallic glasses. Acta Materialia. 56 [18] (2008) 5329-5339 10.1016/j.actamat.2008.07.012
  3. J. Buha, T. Ohkubo. Natural Aging in Mg-Zn(-Cu) Alloys. Metallurgical and Materials Transactions A. 39 [9] (2008) 2259-2273 10.1007/s11661-008-9545-y
  4. W. F. Li, T. Ohkubo, K. Hono, T. Nishiuchi, S. Hirosawa. Coercivity mechanism of hydrogenation disproportionation desorption recombination processed Nd–Fe–B based magnets. Applied Physics Letters. 93 [5] (2008) 052505 10.1063/1.2969416
  5. C. Y. You, T. Ohkubo, Y. K. Takahashi, K. Hono. Boron segregation in crystallized MgO/amorphous-Co40Fe40B20 thin films. Journal of Applied Physics. 104 [3] (2008) 033517 10.1063/1.2963709
  6. B. Srinivasarao, K. Oh-ishi, T. Ohkubo, T. Mukai, K. Hono. Synthesis of high-strength bimodally grained iron by mechanical alloying and spark plasma sintering. Scripta Materialia. 58 [9] (2008) 759-762 10.1016/j.scriptamat.2007.12.016
  7. G. Kumar, M. Ohnuma, T. Furubayashi, T. Ohkubo, K. Hono. Thermal embrittlement of Fe-based amorphous ribbons. Journal of Non-Crystalline Solids. 354 [10-11] (2008) 882-888 10.1016/j.jnoncrysol.2007.08.001
2007
  1. 野際公宏, 西村昭彦, 大場弘則, 横山淳, 大久保 忠勝, 宝野 和博. レーザー補助三次元アトムプローブによる酸化物分散強化鋼の微細組織解析. まてりあ. 47 [12] (2007) 626-626
  2. 藤井克彦, 福谷耕司, 大久保 忠勝. イオン照射した原子炉容器鋼の照射組織変化の TEM&3DAP 観察. まてりあ. 47 [12] (2007) 618-618
  3. 外山健, 土屋直柔, 畠山賢彦, 永井康介, 長谷川雅幸, A. Almazouzi, E. van Walle, R. Gerard, 大久保 忠勝. 原子炉圧力容器鋼中ナノ炭化物の三次元アトムプローブ観察. まてりあ. 47 [12] (2007) 610-610
  4. 畠山賢彦, 永井康介, 長谷川雅幸, 大久保 忠勝, M. Eldrup, B. N. Singh. ダイバータヒートシンク Cu-Cr-Zr合金における析出物の 3DAP 観察. まてりあ. 47 [12] (2007) 634-634
  5. 大久保 忠勝, 宝野 和博. 3次元アトムプローブによるナノ組織解析. 顕微鏡. 42 [3] (2007) 192-197
  6. K. Mondal, G. Kumar, T. Ohkubo, K. Oishi, T. Mukai, K. Hono. Large apparent compressive strain of metallic glasses. Philosophical Magazine Letters. 87 [9] (2007) 625-635 10.1080/09500830701413904
  7. R. Gholamipour, A. Beitollahi, V.K. Marghusian, T. Ohkubo. Cu effects on coercivity and microstructural features in nanocrystalline Nd–Fe–Co–B annealed melt-spun ribbons. Physica B: Condensed Matter. 398 [1] (2007) 51-54 10.1016/j.physb.2007.04.087
  8. G. Kumar, T. Ohkubo, T. Mukai, K. Hono. Plasticity and microstructure of Zr–Cu–Al bulk metallic glasses. Scripta Materialia. 57 [2] (2007) 173-176 10.1016/j.scriptamat.2007.02.013
  9. T HONMA, T OHKUBO, S KAMADO, K HONO. Effect of Zn additions on the age-hardening of Mg–2.0Gd–1.2Y–0.2Zr alloys. Acta Materialia. 55 [12] (2007) 4137-4150 10.1016/j.actamat.2007.02.036
  10. S.V. Karthik, A. Rajanikanth, Y.K. Takahashi, T. Ohkubo, K. Hono. Microstructure and spin polarization of quaternary Co2Cr1−xVxAl, Co2V1−xFexAl and Co2Cr1−xFexAl Heusler alloys. Acta Materialia. 55 [11] (2007) 3867-3874 10.1016/j.actamat.2007.03.003
  11. Y.K. Takahashi, T. Ohkubo, K. Hono, S. Okamura, N. Tezuka, K. Inomata. Transmission electron microscopy of Co2(Cr1−xFex)Al sputtered films and their magnetic tunneling junctions. Journal of Magnetism and Magnetic Materials. 313 [2] (2007) 378-382 10.1016/j.jmmm.2006.09.023
  12. K. Mondal, T. Ohkubo, T. Mukai, K. Hono. Glass Forming Ability and Mechanical Properties of Quinary Zr-Based Bulk Metallic Glasses. MATERIALS TRANSACTIONS. 48 [6] (2007) 1322-1326 10.2320/matertrans.mf200621
  13. T. Ohkubo, D. Nagahama, T. Mukai, K. Hono. Stress–strain behaviors of Ti-based bulk metallic glass and their nanostructures. Journal of Materials Research. 22 [05] (2007) 1406-1413 10.1557/jmr.2007.0180
  14. Jianguo Long, P. R. Ohodnicki, D. E. Laughlin, M. E. McHenry, T. Ohkubo, K. Hono. Structural studies of secondary crystallization products of the Fe23B6-type in a nanocrystalline FeCoB-based alloy. Journal of Applied Physics. 101 [9] (2007) 09N114 10.1063/1.2714250
  15. K. Oh-ishi, H.W. Zhang, T. Ohkubo, K. Hono. Microstructure characterization of bulk nanocrystalline Fe–0.8C alloy produced by mechanical milling and spark plasma sintering. Materials Science and Engineering: A. 456 [1-2] (2007) 20-27 10.1016/j.msea.2006.12.002
  16. S. Ohsaki, S. Kato, N. Tsuji, T. Ohkubo, K. Hono. Bulk mechanical alloying of Cu–Ag and Cu/Zr two-phase microstructures by accumulative roll-bonding process. Acta Materialia. 55 [8] (2007) 2885-2895 10.1016/j.actamat.2006.12.027
  17. Yoshihisa Kimoto, Akihito Giga, Tadakatsu Ohkubo, Yorinobu Takigawa, K. Hono, Kenji Higashi. Ni-W Amorphous/Nanocrystalline Duplex Composite Produced by Electrodeposition. MATERIALS TRANSACTIONS. 48 [5] (2007) 996-1000 10.2320/matertrans.48.996
  18. Akihiko Hirata, Yoshihiko Hirotsu, T.G. Nieh, Tadakatsu Ohkubo, Nobuo Tanaka. Direct imaging of local atomic ordering in a Pd–Ni–P bulk metallic glass using Cs-corrected transmission electron microscopy. Ultramicroscopy. 107 [2-3] (2007) 116-123 10.1016/j.ultramic.2006.06.002
2006
  1. Akihiko Hirata, Yoshihiko Hirotsu, Eiichiro Matsubara, Tadakatsu Ohkubo, Kazuhiro Hono. Mechanism of nanocrystalline microstructure formation in amorphousFe−Nb−Balloys. Physical Review B. 74 [18] (2006) 10.1103/physrevb.74.184204
  2. 名古秀徳, 長村光造, 足立大樹, 宝野 和博, 大久保 忠勝. Al-Zn-Mg基合金における準安定析出物組成の3DAP解析. 軽金属. 56 [11] (2006) 655-661
  3. D NAGAHAMA, T OHKUBO, T MIYOSHI, S HIROSAWA, K HONO. Effect of Ti and C additions on the microstructure and magnetic properties of Nd6Pr1Fe80B13 melt-spun ribbons. Acta Materialia. 54 [18] (2006) 4871-4879 10.1016/j.actamat.2006.06.024
  4. H. Takehara, H. Ino, T. Ohkubo, K. Hono. Effects of Zr and C Additions on Magnetic Properties and Microstructures of &alpha;-Fe/Nd<SUB>2</SUB>F<SUB>14</SUB>B Nanocomposite Magnets. MATERIALS TRANSACTIONS. 47 [9] (2006) 2399-2404 10.2320/matertrans.47.2399
  5. A.A. Kündig, M. Ohnuma, T. Ohkubo, T. Abe, K. Hono. Glass formation and phase separation in the Ag–Cu–Zr system. Scripta Materialia. 55 [5] (2006) 449-452 10.1016/j.scriptamat.2006.05.012
  6. A. HIRATA, Y. HIROTSU, T. OHKUBO, E. MATSUBARA, A. MAKINO. Local structure studies of Fe-Nb-B metallic glasses using electron diffraction. Journal of Microscopy. 223 [3] (2006) 191-194 10.1111/j.1365-2818.2006.01617.x
  7. Y. K. Takahashi, T. Ohkubo, K. Hono. Microstructure and magnetic properties of SmCo5 thin films deposited on Cu and Pt underlayers. Journal of Applied Physics. 100 [5] (2006) 053913 10.1063/1.2266247
  8. T.T. Sasaki, K. Oh-ishi, T. Ohkubo, K. Hono. Enhanced age hardening response by the addition of Zn in Mg–Sn alloys. Scripta Materialia. 55 [3] (2006) 251-254 10.1016/j.scriptamat.2006.04.005
  9. S. V. Karthik, A. Rajanikanth, Y. K. Takahashi, T. Okhubo, K. Hono. Spin polarization of quaternary Co2Cr1−xFexAl Heusler alloys. Applied Physics Letters. 89 [5] (2006) 052505 10.1063/1.2245224
  10. A.A. Kündig, R. Gopalan, T. Ohkubo, K. Hono. Coercivity enhancement in melt-spun SmCo5 by Sn addition. Scripta Materialia. 54 [12] (2006) 2047-2051 10.1016/j.scriptamat.2006.03.007
  11. Reza, GHOLAMIPOUR, A. Beitollahi, OHKUBO, Tadakatsu, V.K. Marghusian, HONO, Kazuhiro. Microstructural Studies and Micromagnetic Analysis of Nanocrystalline NdFeCoMB (M = Ga, Ge) Melt-Spun Ribbon. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE. 37A [5] (2006) 1581-1587
  12. E.S. Park, H.J. Chang, D.H. Kim, T. Ohkubo, K. Hono. Effect of the substitution of Ag and Ni for Cu on the glass forming ability and plasticity of Cu60Zr30Ti10 alloy. Scripta Materialia. 54 [9] (2006) 1569-1573 10.1016/j.scriptamat.2006.01.023
  13. R GOPALAN, T OHKUBO, K HONO. Identification of the cell boundary phase in the isothermally aged commercial Sm(Co0.725Fe0.1Cu0.12Zr0.04)7.4 sintered magnet. Scripta Materialia. 54 [7] (2006) 1345-1349 10.1016/j.scriptamat.2005.12.009
  14. G. Kumar, D. Nagahama, M. Ohnuma, T. Ohkubo, K. Hono. Structural evolution in the supercooled liquid of Zr36Ti24Be40 metallic glass. Scripta Materialia. 54 [5] (2006) 801-805 10.1016/j.scriptamat.2005.11.019
  15. R. Gholamipour, A. Beitollahi, V. K. Marghusian, T. Ohkubo, K. Hono, S. V. Andreev, A. N. Bogatkin, S. S. Duragin, A. N. Kozolov, N. V. Kudervatykh. Microstructure-magnetic properties relationships in nanocrystalline Nd-Fe-Co-Ge-B annealed ribbons. physica status solidi (a). 203 [2] (2006) 287-293 10.1002/pssa.200521099
  16. N. Tian, M. Ohnuma, T. Ohkubo, K. Hono. Primary Crystallization of an Al<SUB>88</SUB>Gd<SUB>6</SUB>Er<SUB>2</SUB>Ni<SUB>4</SUB> Metallic Glass. MATERIALS TRANSACTIONS. 46 [12] (2006) 2880-2885 10.2320/matertrans.46.2880
  17. Yoshihiko Hirotsu, T. G. Nieh, Akihiko Hirata, Tadakatsu Ohkubo, Nobuo Tanaka. Local atomic ordering and nanoscale phase separation in a Pd-Ni-P bulk metallic glass. Physical Review B. 73 [1] (2006) 10.1103/physrevb.73.012205
2005
  1. 長濱 大輔, 宝野 和博, 大久保 忠勝, 広沢哲, 三次敏夫. Nd-Pr-fe-B(-Ti-C)急冷薄帯の磁気特性と微細構造. まてりあ. 44 [12] (2005) 978
  2. D. Nagahama, T. Ohkubo, T. Mukai, K. Hono. Characterization of Nanocrystal Dispersed Cu<SUB>60</SUB>Zr<SUB>30</SUB>Ti<SUB>10</SUB> Metallic Glass. MATERIALS TRANSACTIONS. 46 [6] (2005) 1264-1270 10.2320/matertrans.46.1264
  3. Takeshi Hanada, Tatsuaki Sakamoto, Tadakatsu Ohkubo, Yoshihiko Hirotsu, Hirokazu Kanekiyo, Satoshi Hirosawa. Local Atomic Structures of Amorphous Nd<SUB>4.5</SUB>Fe<SUB>77</SUB>B<SUB>18.5</SUB> Alloys Formed under Different Cooling Rates and Their Relations to the Structures in the Early Stage of Crystallization. MATERIALS TRANSACTIONS. 44 [10] (2005) 2042-2047 10.2320/matertrans.44.2042
  4. Takeshi Hanada, Yoshihiko Hirotsu, Tadakatsu Ohkubo. Nanoscale Phase Separation in an Fe<SUB>70</SUB>Nb<SUB>10</SUB>B<SUB>20</SUB> Glass Studied by Advanced Electron Microscopy Techniques. MATERIALS TRANSACTIONS. 45 [4] (2005) 1194-1198 10.2320/matertrans.45.1194
  5. T. Ohkubo, S. Shoji, Y. Kawamura, K. Hono. Nanostructure analysis of friction welded Pd–Ni–P/Pd–Cu–Ni–P metallic glass interface. Scripta Materialia. 53 [5] (2005) 493-497 10.1016/j.scriptamat.2005.05.001
  6. J OH, T OHKUBO, T MUKAI, K HONO. TEM and 3DAP characterization of an age-hardened Mg–Ca–Zn alloy. Scripta Materialia. 53 [6] (2005) 675-679 10.1016/j.scriptamat.2005.05.030
  7. R. Gopalan, T. Ohkubo, K. Hono. Platelet microstructure and magnetic properties in rapidly solidified Sm20.8Co63.4Fe7.9Cu2.4Zr1.6B4 ribbons. Scripta Materialia. 53 [3] (2005) 367-371 10.1016/j.scriptamat.2005.03.050
  8. R. Gopalan, X.Y. Xiong, T. Ohkubo, K. Hono. Nanoscale microstructure and magnetic properties of melt-spun Sm(Co0.725Fe0.1Cu0.12Zr0.04B0.015)7.4 ribbons. Journal of Magnetism and Magnetic Materials. 295 [1] (2005) 7-20 10.1016/j.jmmm.2004.12.033
  9. J.C. Oh, T. Ohkubo, Y.C. Kim, E. Fleury, K. Hono. Phase separation in Cu43Zr43Al7Ag7 bulk metallic glass. Scripta Materialia. 53 [2] (2005) 165-169 10.1016/j.scriptamat.2005.03.046
  10. E.S. Park, D.H. Kim, T. Ohkubo, K. Hono. Enhancement of glass forming ability and plasticity by addition of Nb in Cu–Ti–Zr–Ni–Si bulk metallic glasses. Journal of Non-Crystalline Solids. 351 [14-15] (2005) 1232-1238 10.1016/j.jnoncrysol.2005.02.019
  11. A.A. Kündig, M. Ohnuma, T. Ohkubo, K. Hono. Early crystallization stages in a Zr–Cu–Ni–Al–Ti metallic glass. Acta Materialia. 53 [7] (2005) 2091-2099 10.1016/j.actamat.2005.01.022
  12. 宝野 和博, 大久保 忠勝, 高橋 有紀子. 3次元アトムプローブによる磁性薄膜解析の新展開. JOURNAL OF THE MAGNETIC SOCIETY OF JAPAN. 29 [4] (2005) 388-394
  13. T. Honma, T. Ohkubo, K. Hono, S. Kamado. Chemistry of nanoscale precipitates in Mg–2.1Gd–0.6Y–0.2Zr (at.%) alloy investigated by the atom probe technique. Materials Science and Engineering: A. 395 [1-2] (2005) 301-306 10.1016/j.msea.2004.12.035
  14. 大久保 忠勝, 弘津禎彦. アモルファス合金の電子線構造解析. まてりあ. 44 [1] (2005) 24-31
2004
  1. Y. Hirotsu, T. Hanada, T. Ohkubo, A. Makino, Y. Yoshizawa, T.G. Nieh. Nanoscale phase separation in metallic glasses studied by advanced electron microscopy techniques. Intermetallics. 12 [10-11] (2004) 1081-1088 10.1016/j.intermet.2004.04.002
  2. I Martin, T Ohkubo, M Ohnuma, B Deconihout, K Hono. Nanocrystallization of Zr41.2Ti13.8Cu12.5Ni10.0Be22.5 metallic glass. Acta Materialia. 52 [15] (2004) 4427-4435 10.1016/j.actamat.2004.05.038
  3. A. A. Kündig, N. Abe, M. Ohnuma, T. Ohkubo, H. Mamiya, K. Hono. Rapidly solidified (FePt)70P30 alloy with high coercivity. Applied Physics Letters. 85 [5] (2004) 789-791 10.1063/1.1776333
  4. Hayato Hashino, Yosuke Tazaki, Hiromitsu Ino, Tadakatsu Ohkubo, Kazuhiro Hono. Effects of Zr and C additions on the magnetic properties and structures of melt-spun Fe83Nd10B7-based nanocomposite magnets. Journal of Magnetism and Magnetic Materials. 278 [1-2] (2004) 68-75 10.1016/j.jmmm.2003.11.374
  5. KAJIWARA, KAGEHISA, OHNUMA, Masato, OHKUBO, Tadakatsu, PING, De-hai, HONO, Kazuhiro. APFIM/TEM/SAXS studies of early stage crystallization of a Zr52.5Cu17.9Ni14.6Al10Ti5 metallic glass. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING. 375 (2004) 738-743
  6. A.A. Kündig, M. Ohnuma, D.H. Ping, T. Ohkubo, K. Hono. In situ formed two-phase metallic glass with surface fractal microstructure. Acta Materialia. 52 [8] (2004) 2441-2448 10.1016/j.actamat.2004.01.036
  7. Y. K. Takahashi, T. Koyama, M. Ohnuma, T. Ohkubo, K. Hono. Size dependence of ordering in FePt nanoparticles. Journal of Applied Physics. 95 [5] (2004) 2690-2696 10.1063/1.1643187
  8. X.Y Xiong, T Ohkubo, T Koyama, K Ohashi, Y Tawara, K Hono. The microstructure of sintered Sm(Co0.72Fe0.20Cu0.055Zr0.025)7.5 permanent magnet studied by atom probe. Acta Materialia. 52 [3] (2004) 737-748 10.1016/j.actamat.2003.10.015
  9. Yasuyoshi Nagai, T. Toyama, Z. Tang, Masuyuki Hasegawa, S. Yanagita, Tadakatsu Ohkubo, Kazuhiro Hono. Embedded Ultrafine Clusters Investigated by Coincidence Doppler Broadening Spectroscopy. Materials Science Forum. 445-446 (2004) 11-15 10.4028/www.scientific.net/msf.445-446.11
  10. T. Toyama, Yasuyoshi Nagai, Z. Tang, Masuyuki Hasegawa, Tadakatsu Ohkubo, Kazuhiro Hono. Irradiation-Induced Defects and Cu Precipitates in Ternary Fe-Based Model Alloys for Nuclear Reactor Pressure Vessel Steels Studied by Positron Annihilation and 3D Atom Probe. Materials Science Forum. 445-446 (2004) 195-197 10.4028/www.scientific.net/msf.445-446.195

会議録 TSV

2015
  1. SASAKI, Taisuke, ELSAYED, Fady Refaat, Taiki Nakata, OHKUBO, Tadakatsu, Shigeharu Kamado, HONO, Kazuhiro. Strong and ductile heat-treatable Mg-Sn-Zn-Al wrought alloys. Mg2015 Proceedings 2015, 1-9
2011
  1. Y.M. Chen, T Ohkubo, K Hono. Laser assisted field evaporation of oxides in atom probe analysis. ULTRAMICROSCOPY 2011, 562-566
  2. JAYAMANI, Jayaraj, MENDIS, Chamini Lakshi, OHKUBO, Tadakatsu, OISHI, Keiichiro, HONO, Kazuhiro. Precipitation hardenable Mg-Ca-Al alloys . Magnesium Technology 2011 2011, 245-248
  3. F. Li, T. Ohkubo, Y.M. Chen, M. Kodzuka, K. Hono. Quantitative atom probe analyses of rare-earth-doped ceria by femtosecond pulsed laser. ULTRAMICROSCOPY 2011, 589-594
  4. H. Sepehri-Amin, T. Ohkubo, T. Nishiuchi, S. Hirosawa, K. Hono. Quantitative laser atom probe analyses of hydrogenation-disproportionated Nd–Fe–B powders. ULTRAMICROSCOPY 2011, 615-618
  5. M. Tsukada, H. Tamura, K.P. McKenna, A.L. Shluger, Y.M. Chen, T. Ohkubo, K. Hono. Mechanism of laser assisted field evaporation from insulating oxides. ULTRAMICROSCOPY 2011, 567-570
  6. Katsuhiko Fujii, Tadakatsu Ohkubo, Koji Fukuya. Effects of solute elements on irradiation hardening and microstructural evolution in low alloy steels. JOURNAL OF NUCLEAR MATERIALS 2011, 949-952
  7. K. Hono, T. Ohkubo, Y.M. Chen, M. Kodzuka, K. Oh-ishi, H. Sepehri-Amin, F. Li, T. Kinno, S. Tomiya, Y. Kanitani. Broadening the applications of the atom probe technique by ultraviolet femtosecond laser. ULTRAMICROSCOPY 2011, 576-583
  8. S Yamamuro, M Okano, T Tanaka, K Sumiyama, N Nozawa, T Nishiuchi, S Hirosawa, T Ohkubo. Direct Iron Coating onto Nd-Fe-B Powder by Thermal Decomposition of Iron Pentacarbonyl. Journal of Physics: Conference Series 2011, 012050-1-012050-4
  9. K. Oh-ishi, C.L. Mendis, T. Ohkubo, K. Hono. Effect of laser power and specimen temperature on atom probe analyses of magnesium alloys. ULTRAMICROSCOPY 2011, 715-718
  10. M. Kodzuka, T. Ohkubo, K. Hono. Laser assisted atom probe analysis of thin film on insulating substrate. ULTRAMICROSCOPY 2011, 557-561
2009
  1. Shigetaka Tomiya, Masao Ikeda, Shinji Tanaka, Yuya Kanitani, Tadakatsu Ohkubo, Kazuhiro Hono. Structural Defects in GaN-based Materials and Their Relation to GaN-based Laser Diodes. Mater.Res.Soc.Symp.Proc. 2009, 05-05-9
  2. LI, Wanfeng, OHKUBO, Tadakatsu, HONO, Kazuhiro, T. Nishiuchi, S. Hirosawa. The role of grain boundaries in the coercivity of hydrogenation disproportionation desorption recombination processed Nd&#8211;Fe&#8211;B powders. JOURNAL OF APPLIED PHYSICS 2009, 07A706-1-07A706-3
  3. A. Nishimura, K. Nogiwa, T. Otobe, OHKUBO, Tadakatsu, HONO, Kazuhiro, K. Kondo, A. Yokoyama. Influence of laser irradiation condition on a femtosecond laser assisted tomographic atom probe. ULTRAMICROSCOPY 2009, 467-471
  4. M. Kodzuka, OHKUBO, Tadakatsu, HONO, Kazuhiro, F. Matsukura, H. Ohno. 3DAP analysis of (Ga,Mn)As diluted magnetic semiconductor thin film. ULTRAMICROSCOPY 2009, 644-648
  5. Tadakatsu Ohkubo, Yimeng M. Chen, Masaya Kodzuka, Fang Li, Keiichiro Oh-ishi, Kazuhiro Hono. Laser-Assisted Atom Probe Analysis of Bulk Insulating Ceramics. Proceedings of MRS 2009 Fall meeting 2009, 09-09-6
  6. HONO, Kazuhiro, OHKUBO, Tadakatsu, LI, Wanfeng. Toward Higher Performance Permanent Magnets for Automotive Applications. Emerging Challenges for Metals and Materials - Engineering and Technology 2009, 88-100
  7. M. Hatakeyama, T. Toyama, J. Yang, Y. Nagai, M. Hasegawa, OHKUBO, Tadakatsu, M. Eldrup, B.N. Singh. 3D-AP and positron annihilation study of precipitation behavior in Cu-Cr-Zr alloy. JOURNAL OF NUCLEAR MATERIALS 2009, 852-855
  8. T. Fukagawa, S. Hirosawa, OHKUBO, Tadakatsu, HONO, Kazuhiro. The effect of oxygen on the surface coercivity of Nd-coated Nd-Fe-B sintered magnets. JOURNAL OF APPLIED PHYSICS 2009, 07A724-1-07A724-3
2007
  1. N. Nita, Y. Anma, H. Matsui, OHKUBO, Tadakatsu, HONO, Kazuhiro. Irradiation induced precipitates in vanadium alloys studied by atom probe microanalysis. JOURNAL OF NUCLEAR MATERIALS 2007, 858-863
  2. OHKUBO, Tadakatsu, T. Miyoshi, S. Hirosawa, HONO, Kazuhiro. Effects of C and Ti additions on the microstructures of Nd9Fe77B14 nanocomposite magnets. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 2007, 435-439
2006
  1. HIRATA Akihiko, HIROTSU Yoshihiko, OHKUBO, Tadakatsu, TANAKA Nobuo, T.G. Nieh. Local atomic structure of Pd-Ni-P bulk metallic glass examined by high-resolution electron microscopy and electron diffraction. INTERMETALLICS 2006, 903-907

口頭発表 TSV

2018
  1. 大久保 忠勝. レーザーアトムプローブの開発とその応用. 応用物理学会 第23回結晶工学セミナー. 2018
  2. キム テフン, 大久保 忠勝, 佐々木 泰祐, 宝野 和博, Fujikawa Y., Miwa M., Enokido Y.. Temperature Dependence of Microstructure of Tb-rich Shell in Grain Boundary Diffusion Processed Nd-Fe-B Sintered Magnets. 第42回日本磁気学会学術講演会. 2018
  3. 大久保 忠勝, ディルバ イマンツ, セペリ アミン ホセイン, 宝野 和博. SmFe12 系バルク磁石開発を目指して. 2018 BM シンポジウム. 2018
  4. 陳 君, イ ウェイ, ジョ ユージン, 木村 隆, 関口 隆史, 埋橋 淳, 宝野 和博, 大久保 忠勝, Shinya Takashima, Masaharu Edo. Atom Probe and Cathodoluminescence study of Mg implanted layers in GaN. The International Workshop on Nitride Semiconductors 2018 (IWN 2018). 2018
  5. KUMAR Ashutosh, UZUHASHI Jun, TANAKA Ryo, TAKASHIMA Shinya, HONO Kazuhiro, OHKUBO Tadakatsu, EDO Masaharu. An atom probe tomographic investigation of Mg distribution in Mg-implanted GaN layers on free standing GaN substrates. International Workshop on Nitride Semiconductors (IWN 2018). 2018
  6. イ ウェイ, 陳 君, 木村 隆, 埋橋 淳, Tetsuya Takeuchi, 大久保 忠勝, Satoshi Kamiyama, 宝野 和博, 関口 隆史. Cathodoluminescence Characterization of Core-shell GaN Nanowires. The International Workshop on Nitride Semiconductors 2018 (IWN 2018). 2018
  7. 佐々木 泰祐, 大久保 忠勝, 宝野 和博. Helios G4 UX を用いたTEM・3DAP解析用試料の作製とTitan200、3DAPを用いた原子レベル微細組織解析. サーモフィッシャーサイエンティフィック  マテリアルサイエンスセミナー. 2018
  8. 小川 大介, 徐 先東, 高橋 有紀子, 大久保 忠勝, 廣澤 哲, 宝野 和博. 非強磁性元素拡散したThMn12型Sm(Fe0.8Co0.2)12異方性多結晶薄膜の構造と磁気特性. 日本金属学会. 2018
  9. YOSHIMITSU, Yushi, SASAKI, Taisuke, BIAN, Ming-Zhe, Taiki Nakata, OHKUBO, Tadakatsu, Shigeharu Kamado, HONO, Kazuhiro. Mg-Zn-Ca-Zr合金の焼付硬化性に及ぼすZn添加量の影響. 日本金属学会第163回講演大会. 2018
  10. DIRBA, Imants, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. 超精密SmFe12系磁石のHDDR法による開発. JIM Autumn Meeting 2018. 2018
  11. KIM, Tae-Hoon, SASAKI, Taisuke, OHKUBO, Tadakatsu, Yoshinori Fujikawa , HONO, Kazuhiro, Masashi Miwa, Yasushi Enokido. Mechanism for Tb-rich shell formation in grain boundary diffusion processed Nd-Fe-B sintered magnets. 日本金属学会第163回講演大会. 2018
  12. SEPEHRI AMIN, Hossein, A. Taubel, OHKUBO, Tadakatsu, K. P. Skokov, O. Gutfleisch, HONO, Kazuhiro. Microstructural origin of hysteresis in Ni-Mn-In based magnetocaloric compounds. Thermag VIII, International Conference on Caloric Cooling. 2018
  13. シェーク トーマス, 介川 裕章, 徐 先東, 大久保 忠勝, 三谷 誠司, 宝野 和博. Large perpendicular magnetic anisotropy in sputter-deposited Fe100-xAlx/MgAl2O4 heterostructures. 第42回日本磁気学会学術講演会. 2018
  14. 磯上 慎二, 埋橋 淳, 大久保 忠勝, 林 将光. 酸化物/強磁性金属ヘテロ接合膜における磁気抵抗効果と強磁性金属結晶配向性との相関. 第42回応用物理学会春季学術講演会. 2018
  15. 徐 先東, 佐々木 泰祐, マルコ ソダーツニク, セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. Improved coercivity and squareness in hot-deformed magnets with respect to sintered magnet with the same chemical composition. Rare Earth Permanent Magnets and Advanced Magnetic Materials and Their Applications (REPM) . 2018
  16. LI, Jiangnan, LIU, Lihua, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Micromagnetic studies on the coercivity of heavy rare-earth diffusion processed Nd-Fe-B hot-deformed magnets. REPM2018. 2018
  17. SASAKI, Taisuke, BIAN, Ming-Zhe, YOSHIMITSU, Yushi, Taiki Nakata, OHKUBO, Tadakatsu, Shigeharu Kamado, HONO, Kazuhiro. Development of heat-treatable Mg-Zn-Ca sheet alloy with high strength and excellent room temperature formability. Mg2018. 2018
  18. シェーク トーマス, アルマハドウイ ミフタ, 徐 先東, マンダル ルマ, 増田 啓介, 介川 裕章, 三浦 良雄, 高橋 有紀子, 大久保 忠勝, 三谷 誠司, 宝野 和博. 新規Fe 基合金Fe-Al超薄膜/スピネル界面における大きな垂直磁気異方性の観測とその電圧制御への取り組み. ImPACT佐橋プログラム公開成果報告会. 2018
  19. KASAI, Shinya, MUKAIYAMA, Koki, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. 化合物半導体障壁層を用いた磁気トンネル接合の高出力化. ImPACT佐橋プログラム、公開成果報告会. 2018
  20. UZUHASHI, Jun, PRADEL, Charles Ken, OHKUBO, Tadakatsu, FUKATA, Naoki, HONO, Kazuhiro. Atomprobe Analysis of Nanoscale Voids in p-type ZnO Nanowires. Atom Probe Tomography and Microscopy (APT&M) 2018. 2018
  21. PRADEL, Charles Ken, UZUHASHI, Jun, TAKEI, Toshiaki, OHKUBO, Tadakatsu, HONO, Kazuhiro, FUKATA, Naoki. Investigation of Nanoscale Voids in Sb-doped p-type ZnO nanowires. Nanowire Week 2018. 2018
  22. SEPEHRI AMIN, Hossein, TANG, Xin, LIU, Lihua, TOZMAN KARANIKOLAS, Pelin, DIRBA, Imants, OHKUBO, Tadakatsu, HONO, Kazuhiro. Development of high performance permanent magnets without reliance on scarce elements. Future Perspectives on Novel Magnetic Materials. 2018
  23. YOSHIMITSU, Yushi, SASAKI, Taisuke, Taiki Nakata, Shigeharu Kamado, OHKUBO, Tadakatsu, HONO, Kazuhiro. Zn 添加量の最適化による高強度高成形性ベークハード型 Mg-Zn-Ca-Zr 合金の開発. 軽金属学会第134回春季大会. 2018
  24. MANDAL, Ruma, JUNG, Jin Won, TAKAHASHI, Yukiko, SAKURABA, Yuya, KASAI, Shinya, OHKUBO, Tadakatsu, HONO, Kazuhiro. Tetragonally Distorted Ultrathin Fe50Co50 Epitaxial Film with High Magnetic Anisotropy and Gilbert Damping. Intermag2018. 2018
  25. SASAKI, Taisuke, OHKUBO, Tadakatsu, Yukio Takada, Takashi Sato, Akira Kato, Yuji Kaneko, HONO, Kazuhiro. Role of Ga on the microstructure and coercivity in Nd-rich Ga-doped Nd-Fe-B sintered magnets. TMS2018 147th Annual Meeting & Exhibition. 2018
2017
  1. LIU, Lihua, SEPEHRI AMIN, Hossein, SASAKI, Taisuke, OHKUBO, Tadakatsu, Masao Yano, Noritsugu Sakuma, Akira Kato, Tetsuya Shoji, HONO, Kazuhiro. Coercivity enhancement of hot-deformed Nd-Fe-B magnets by the eutectic grain boundary diffusion process using Nd64Fe12Ga20Cu4 alloy. 62nd Annual Conference on Magnetism and Magnetic Materials. 2017
  2. XU, Xiandong, Zhanji Dong, KIM, Tae-Hoon, SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. Microstructure analysis of a Ga-doped NdFeB magnet with 2.0T coercivity. 62nd Annual Conference on Magnetism and Magnetic Materials. 2017
  3. SEKIGUCHI, Takashi, KIMURA, Takashi, LUO, Xianjia, CHO, Yujin, MITSUISHI, Kazutaka, OHKUBO, Tadakatsu, UZUHASHI, Jun, HONO, Kazuhiro, Masaharu Edo, Shinya Takashima. Atom Probe and Cathodoluminescence study of Mg implanted layers in GaN. DRIP XVII (Defects-Recognition, Imaging and Physics in Semicondu. 2017
  4. TANG, Xin, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. High performance Ce-substituted Nd-Fe-B hot-deformed magnets. 62nd conference on magnetism and magnetic materials. 2017
  5. SASAKI, Taisuke, BIAN, Ming-Zhe, OHKUBO, Tadakatsu, HONO, Kazuhiro. Microstructure characterization of structural materials by laser-assisted 3D atom probe. SIP-IMASM 2017. 2017
  6. SUKEGAWA, Hiroaki, XIANG, Qingyi, KASAI, Shinya, AL-MAHDAWI, Muftah, BELMOUBARIK, Mohamed, MUKAIYAMA, Koki, IKHTIAR, Ikhtiar, SCHEIKE, Thomas, CHEN, Jiamin, SAKURABA, Yuya, OHKUBO, Tadakatsu, MASUDA, Keisuke, MIURA, Yoshio, MITANI, Seiji, HONO, Kazuhiro. New spintronic materials for magnetic tunnel junctions. The 3rd ImPACT International Symposium. 2017
  7. HONO, Kazuhiro, SEPEHRI AMIN, Hossein, SASAKI, Taisuke, OHKUBO, Tadakatsu. Nd-Fe-B permanent magnets with ultimate hard magnetic properties. 第41回 日本磁気学会学術講演会. 2017
  8. SUKEGAWA, Hiroaki, Yushi Kato, BELMOUBARIK, Mohamed, Po Han, CHENG, Tadaomi Daibo, Naoharu Shimomura, Yuuzo Kamiguchi, Junichi Ito, Hiroaki Yoda, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. MgGa2O4スピネルバリアを用いた低抵抗エピタキシャル強磁性トンネル接合. 第41回日本磁気学会学術講演会. 2017
  9. XU, Xiandong, SASAKI, Taisuke, KIM, Tae-Hoon, OHKUBO, Tadakatsu, HONO, Kazuhiro. 2T保持力を有するGa添加磁石のそしき解析. 日本金属学会2017年秋期講演大会. 2017
  10. OHKUBO, Tadakatsu, HONO, Kazuhiro. レーザーアトムプローブによるナノ組織解析. 第78回応用物理学会秋季学術講演会. 2017
  11. SUH, Byeong-Chan, Yushi Yoshimitsu, SASAKI, Taisuke, BIAN, Ming-Zhe, Taiki Nakata, OHKUBO, Tadakatsu, Shigeharu Kamado, HONO, Kazuhiro. 高強度高成形性熱処理型マグネシウム合金圧延材の開発. 日本金属学会2017年秋期講演大会. 2017
  12. LIU, Lihua, SEPEHRI AMIN, Hossein, SASAKI, Taisuke, OHKUBO, Tadakatsu, Masao Yano, Noritsugu Sakuma, Akira Kato, Tetsuya Shoji, HONO, Kazuhiro. Nd-Fe-Ga-Cu 合金を用いて共晶粒界改善法によるネオジム系熱間加工磁石の保磁力の向上化. 日本金属学会. 2017
  13. SEPEHRI AMIN, Hossein, MIAO, Xue-Fei, OHKUBO, Tadakatsu, HONO, Kazuhiro. Microstructural origin of hysteresis in Ni-Mn-In based magnetocaloric compounds. The Japan Institute of Metals and Materials, 2017 Fall meeting. 2017
  14. SUKEGAWA, Hiroaki, HADORN, Jason Paul, WEN, ZhenChao, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Perpendicular magnetic anisotropy at lattice-matched Co2FeAl/MgAl2O4 interfaces. 日本金属学会2017年秋期(第161回)講演大会. 2017
  15. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. UV Laser assisted 3D atom probe analysis of nano-scaled oxides and magnetic materials. IUMRS-ICAM 2017-The 15th international conference on adv. mater.. 2017
  16. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. 3DAP/TEM Study of Precipitation Hardened Magnesium Alloys. Microscopy & Microanalysis 2017 Meeting. 2017
  17. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. 時効析出型マグネシウム合金の3DAP解析と合金開発への展開. 日本学術振興会材料の微細組織と機能性第 133委員会第237回研究会. 2017
  18. SEPEHRI AMIN, Hossein, PARK, Pumsuk, TANG, Xin, OHKUBO, Tadakatsu, HONO, Kazuhiro. Influence of grain morphology on coercivity of Nd-Fe-B based permanent magnets. Science Opening Up a New Era of High-Performance Permanent Magn.. 2017
  19. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Dy-free high coercivity Nd-Fe-B permanent magnets. The 4th NIMS-Taiwan MOST workshop. 2017
  20. TAKAHASHI, Yukiko, MIURA, Yoshio, R. Choi, OHKUBO, Tadakatsu, WEN, ZhenChao, ISHIOKA, Kunie, MANDAL, Ruma, SUKEGAWA, Hiroaki, R Medapalli, MITANI, Seiji, E.E. Fullerton, HONO, Kazuhiro. Origin of the increased damping of ultrathin films of Co2FeAl with perpendicular anisotropy. Intermag. 2017
  21. KIM, Tae-Hoon, SASAKI, Taisuke, OHKUBO, Tadakatsu, A. Kato, Y. Takada, Y. Kaneko, HONO, Kazuhiro. Magnetic and microstructural changes of Dy-free and Dy-containing Nd-Fe-B sintered magnets during grain boundary diffusion process. Intermag2017. 2017
  22. SUKEGAWA, Hiroaki, Yushi Kato, BELMOUBARIK, Mohamed, Po Han, CHENG, Tadaomi Daibo, Naoharu Shimomura, Yuuzo Kamiguchi, Junichi Ito, Hiroaki Yoda, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Epitaxial magnetic tunnel junctions with a low barrier height spinel MgGa2O4. INTERMAG Europe 2017. 2017
  23. SEPEHRI AMIN, Hossein, J. Thielsch, OHKUBO, Tadakatsu, J. Fischbacher, T. Schrefl, O. Gutfleisch, HONO, Kazuhiro. Microstructure and coercivity of Sm2(Co,Fe,Cu,Zr)17 type sintered magnets. 3N-Lab Workshop on Permanent Magnets. 2017
  24. SEPEHRI AMIN, Hossein, MARKO, Soderznik, SASAKI, Taisuke, J. Fischbacher, OHKUBO, Tadakatsu, Y. Takada, T. Sato, Y. Kaneko, A. Kato, T. Schrefl, HONO, Kazuhiro. Dynamic observation of magnetization reversals in Nd-Fe-B sintered magnets. Japan Institute of Metals and Materials. 2017
  25. SUKEGAWA, Hiroaki, Yushi Kato, BELMOUBARIK, Mohamed, Po Han, CHENG, Tadaomi Daibo, Naoharu Shimomura, Yuuzo Kamiguchi, Junichi Ito, Hiroaki Yoda, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. 低バリア高さを有する強磁性トンネル接合用バリア材料の開発:MgGa2O4スピネル酸化物. 第64回応用物理学会春季学術講演会. 2017
  26. XU, Xiandong, SASAKI, Taisuke, OHKUBO, Tadakatsu, Y. Une, H. Kubo, T. Mizoguchi, T. Iriyama, M. Sagawa, HONO, Kazuhiro. Microstructure analysis of Ga doped ultra-fine grained magnets fabricated by HDDR and press-less sintering. Japan Institute of Metals, 2017 Spring meeting. 2017
  27. MUKAIYAMA, Koki, KASAI, Shinya, MITANI, Seiji, IKHTIAR, Ikhtiar, Po Han, CHENG, MASUDA, Keisuke, TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, HONO, Kazuhiro, MIURA, Yoshio. Large magnetoresistance effect in magnetic tunnel junctions with a Cu(In0.8Ga0.2)Se2 barrier with a low resistance-area product. 第64回応用物理学会春季学術講演会. 2017
  28. KIM, Tae-Hoon, SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro, Y. Takada, T. Sato, A. Kato, Y. Kaneko. A comparative study on the Dy distribution in grain boundary diffusion processed Dy-free and Dy-containing Nd-Fe-B sintered magnets. Japan Institute of Metals, 2017 spring meeting. 2017
  29. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. 微細組織制御によるネオジム磁石の高保磁力化. 日本金属学会2017年春期講演大会. 2017
  30. SASAKI, Taisuke, OHKUBO, Tadakatsu, Yasuhiro Une, Hirokazu Kubo, Masato Sagawa, HONO, Kazuhiro. Microstructure and coercivity in ultra-fine grained Nd-Fe-B sintered magnets. TMS 2017 annual meeting and exhibition. 2017
  31. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. Microstructure and magnetic property of NdFeB magnet. CDMSI International Workshop. 2017
  32. BELMOUBARIK, Mohamed, SUKEGAWA, Hiroaki, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. スパッタ法により作製されたスピネルMgAl2O4(001)バリアを用いたエピタキシャル強磁性トンネル接合の巨大トンネル磁気抵抗効果. 強的秩序とその操作に関わる研究グループ 第4回 研究会. 2017
2016
  1. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. レーザーアトムプローブによる構造・機能材料の組織解析. カメカテクニカルセミナー. 2016
  2. SCHEIKE, Thomas, SUKEGAWA, Hiroaki, INOMATA, Kouichiro, OHKUBO, Tadakatsu, HONO, Kazuhiro, MITANI, Seiji. Cation-ordered MgAl2O4 magnetic tunnel junctions with highly spin-polarized Co2FeAl electrodes. 61st Annual Conference on Magnetism and Magnetic Materials (MMM). 2016
  3. MUKAIYAMA, Koki, MASUDA, Keisuke, KASAI, Shinya, TAKAHASHI, Yukiko, Po Han, CHENG, IKHTIAR, Ikhtiar, MIURA, Yoshio, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Magnetotransport properties in the magnetic junctions with a Cu(In0.8Ga0.2)Se2 semiconductor spacer and Co2Fe(Ga0.5Ge0.5) ferromagnetic electrodes. 61st Annual Conference on Magnetism and Magnetic Materials. 2016
  4. BELMOUBARIK, Mohamed, SUKEGAWA, Hiroaki, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Epitaxial Fe/MgAl2O4/Fe(001) magnetic tunnel junctions prepared by a direct sputtering technique and Mg-Al insertion. 61st Annual Conference on Magnetism and Magnetic Materials (MMM). 2016
  5. SUKEGAWA, Hiroaki, HADORN, Jason Paul, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Interfacial perpendicular magnetization and atomic interdiffusion at Co2FeAl/MgAl2O4 spinel interface. 61st Annual Conference on Magnetism and Magnetic Materials (MMM). 2016
  6. QU, Guanxiong, Po Han, CHENG, SAKURABA, Yuya, KASAI, Shinya, FURUBAYASHI, Takao, OHKUBO, Tadakatsu, HONO, Kazuhiro. Determination of spin polarization of half-Heusler NiMnSb by nonlocal spin valve measurement.. 61st Annual Conference on Magnetism and Magnetic Materials. 2016
  7. SASAKI, Taisuke, SUH, Byeong-Chan, OHKUBO, Tadakatsu, HONO, Kazuhiro. 3次元アトムプローブ、TEM、SEMを用いた 構造材料のマルチスケール組織解析. SIP「革新的構造材料」マテリアルズインテグレーションシンポジウム. 2016
  8. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. 時効析出型展伸マグネシウム合金の開発. 日本学術振興会材料の微細組織と機能性第133委員会第234回研究会. 2016
  9. SCHEIKE, Thomas, SUKEGAWA, Hiroaki, INOMATA, Kouichiro, OHKUBO, Tadakatsu, HONO, Kazuhiro, MITANI, Seiji. Lattice-matched Co2FeAl/cation-ordered MgAl2O4/Co2FeAl Magnetic Tunnel Junctions with Large Tunnel Magnetoresistance exceeding 300%. 2nd ImPACT International Symposium on Spintronic Memory, Circu. 2016
  10. BELMOUBARIK, Mohamed, SUKEGAWA, Hiroaki, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Giant tunnel magnetoresistance in epitaxial Fe/MgAl2O4/Fe(001) magnetic tunnel junctions prepared by a direct sputtering technique. 2nd ImPACT International Symposium on Spintronic Memory, Circu. 2016
  11. BELMOUBARIK, Mohamed, SUKEGAWA, Hiroaki, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Effect of an Mg-Al insertion on the directly sputtered epitaxial MgAl2O4(001)-based magnetic tunnel junctions. SSDM2016. 2016
  12. SASAKI, Taisuke, OHKUBO, Tadakatsu, TAKADA Yukio, SATO Takashi, KATO Akira, KANEKO Yuji, HONO, Kazuhiro. Micostructure-coercivity relationship in Nd-rich Ga-doped Nd-Fe-B sintered magnets. 第40回 日本磁気学会学術講演会. 2016
  13. TANG, Xin, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, K. Hioki, A. Hattori , HONO, Kazuhiro. Coercivity enhancement in hot-deformed magnets processed from amorphous precursors. The 40th annual conference on magnetics in Japan. 2016
  14. LIU, Lihua, SEPEHRI AMIN, Hossein, SASAKI, Taisuke, Masao Yano, Noritsugu Sakuma, Tetsuya Shoji, Akira Kato, OHKUBO, Tadakatsu, HONO, Kazuhiro. 共晶粒界拡散プロセスによる熱間加工Nd-Fe-B磁石の高保磁力化. 日本磁気学会第40回学術講演会. 2016
  15. MUKAIYAMA, Koki, KASAI, Shinya, TAKAHASHI, Yukiko, Po Han, CHENG, IKHTIAR, Ikhtiar, OHKUBO, Tadakatsu, KoudouKota, OtaniYoshichika, MITANI, Seiji, HONO, Kazuhiro. Magnetic junctions using a Cu(In0.8Ga0.2)Se2 semiconductor spacer and Co2Fe(Ga0.5Ge0.5) electrodes for low-resistance devices. 第40回日本磁気学会学術講演会. 2016
  16. IKHTIAR, Ikhtiar, Po Han, CHENG, KASAI, Shinya, OHKUBO, Tadakatsu, TAKAHASHI, Yukiko, FURUBAYASHI, Takao, HONO, Kazuhiro. Mg1-xTixO-based magnetic tunnel junctions with CoFeB electrodes. The 40th Annual Conference on Magnetics in Japan. 2016
  17. BELMOUBARIK, Mohamed, SUKEGAWA, Hiroaki, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. High quality cation-disorder MgAl2O4(001)-based magnetic tunnel junctions deposited by a direct sputtering technique. 第40回日本磁気学会学術講演会. 2016
  18. SEPEHRI AMIN, Hossein, J. Thielsch, OHKUBO, Tadakatsu, J. Fischbacher, T. Schrefl, O. Gutfleisch, HONO, Kazuhiro. Influence of microchemistry and interface structure of cell boundary phase on the coercivity of Sm(Co0.78Fe0.10Cu0.09Zr0.03)7.19 sintered magnets. The 40th Annual Conference on Magnetics in Japan. 2016
  19. OHKUBO, Tadakatsu, HONO, Kazuhiro. アトムプローブによる元素分析とその応用. 第32回分析電子顕微鏡討論会. 2016
  20. TANG, Xin, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, K. Hioki, A. Hattori , HONO, Kazuhiro. Coercivity enhancement in hot-deformed magnets processed from amorphous precursors. The 24th International Workshop on Rare-Earth and Future Permane. 2016
  21. OHKUBO, Tadakatsu, YOKOTA, Hirotaka, OIKAWA, Tohru, SCHREFL, Thomas, HONO, Kazuhiro. Micromagnetic simulation on the grain alignment dependence of coercivity in Nd-Fe-B sintered magnets. REPM 2016. 2016
  22. HIRAYAMA, Yusuke, A.K. Panda, OHKUBO, Tadakatsu, HONO, Kazuhiro. Preparation of high coercivity Sm2Fe17N3 anisotropic powder through polymerized-complex and reduction-diffusion process. REPM 16. 2016
  23. SEPEHRI AMIN, Hossein, I. Dirba, C. A. Schwobel, OHKUBO, Tadakatsu, O. Gutfleisch, HONO, Kazuhiro. Design of nanocomposite Nd-Fe-B/Fe magnets using micromagnetic simualtion. REPM 16. 2016
  24. HONO, Kazuhiro, SASAKI, Taisuke, SEPEHRI AMIN, Hossein, LIU, Jun, OHKUBO, Tadakatsu. Impact of atom probe tomography on the development of high coercivity Nd-Fe-B based magnets. SISS-18. 2016
  25. LIU, Jun, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Multiscale characterizations on hot-deformed Nd-Fe-B magnets. APT&M 2016. 2016
  26. HONO, Kazuhiro, SEPEHRI AMIN, Hossein, SASAKI, Taisuke, OHKUBO, Tadakatsu. Dy-free high coercivity Nd-Fe-B permanent magnets. Summit of Materials Science 2016: SMS2016. 2016
  27. Takahiro Yomogita, Satoshi Okamoto, Nobuaki Kikuchi, Osamu Kitakami, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro, Takahiro Akiya, Keiko Hioki, Atsushi Hattori. 熱間加工Nd-Fe-B 磁石のFORC 法解析. 日本金属学会2016年春期講演大会. 2016
  28. Keiko Hioki, Takahiro Akiya, Toshiyuki Morita, Atsushi Hattori, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. 重希土類フリー粒界改質法による熱間加工Nd-Fe-B 磁石の高保磁力化. 日本金属学会2016年春期講演大会. 2016
  29. Satoshi Okamoto, Ryota Goto, Takahiro Yomogita, Nobuaki Kikuchi, Osamu Kitakami, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro, Takahiro Akiya, Keiko Hioki, Atsushi Hattori. 熱間加工Nd-Fe-B 磁石の磁化過程解析. 日本金属学会2016年春期講演大会. 2016
  30. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. Ndリッチ相および2粒子粒界相の制御によるネオジム焼結磁石の高保磁力化. 日本金属学会2016年春期大会. 2016
  31. HIRAYAMA, Yusuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. 高保磁力を有するサブミクロンサイズのSm2Fe17N3粒子の合成. 日本金属学会. 2016
  32. IKHTIAR, Ikhtiar, KASAI, Shinya, Po Han, CHENG, OHKUBO, Tadakatsu, TAKAHASHI, Yukiko, FURUBAYASHI, Takao, HONO, Kazuhiro. Preparation of Mg1-xTixO-based magnetic tunnel junctions with CoFeB electrodes . The 63rd JSAP Spring Meeting 2016. 2016
  33. SCHEIKE, Thomas, SUKEGAWA, Hiroaki, INOMATA, Kouichiro, OHKUBO, Tadakatsu, HONO, Kazuhiro, MITANI, Seiji. Large tunnel magnetoresistance in Co2FeAl/MgAl2O4/Co2FeAl junctions free from the band folding effect. 第63回応用物理学会春季学術講演会. 2016
  34. BELMOUBARIK, Mohamed, SUKEGAWA, Hiroaki, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Giant tunnel magnetoresistance using a cation-disorder MgAl2O4 (001) epitaxial barrier deposited by direct sputtering technique. 第63回応用物理学会春季学術講演会. 2016
  35. OHKUBO, Tadakatsu, HONO, Kazuhiro. 波長依存性とDeep UVレーザーの適用. 材料の微細組織と機能性第133委員会第231回研究会. 2016
  36. HONO, Kazuhiro, SASAKI, Taisuke, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu. Dy-free high coercivity Nd-Fe-B permanent magnets. TMS2016 145th Annual Meeting & Exhibition. 2016
  37. OHKUBO, Tadakatsu, HONO, Kazuhiro. 電界イオン顕微鏡法・アトムプローブ法の原理と応用. 荷電粒子ビームの工業への応用第132委員会第220回研究会. 2016
  38. IKHTIAR, Ikhtiar, KASAI, Shinya, Po Han, CHENG, OHKUBO, Tadakatsu, TAKAHASHI, Yukiko, FURUBAYASHI, Takao, HONO, Kazuhiro. Rock-salt Mg1-xTixO barriers for polycrystalline magnetic tunnel junctions with large tunneling magnetoresistance. 2016 Joint MMM-Intermag Conference. 2016
  39. SASAKI, Taisuke, OHKUBO, Tadakatsu, Yukio Takada, Takeshi Sato, Akira Kato, Yuji Kaneko, HONO, Kazuhiro. Structure and chemistry of grain boundary phase in a Nd-rich Ga-doped Nd-Fe-B sintered magnet. 2016 Joint MMM-Intermag Conference. 2016
2015
  1. SEPEHRI AMIN, Hossein, HONO, Kazuhiro, SASAKI, Taisuke, OHKUBO, Tadakatsu, AKIYA, Takahiro, LIU, Jun, LIU, Lihua. Dy-Free High Coercivity Nd-Fe-B Permanent Magnets. Materials Research Society (MRS). 2015
  2. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. ネオジム磁石のマルチスケール組織解析. 日本学術振興会アモルファス・ナノ第147委員会. 2015
  3. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. Correlative Multi-scale Analysis of Nd-Fe-B Permanent Magnet. AVS 62nd International Symposium & Exhibition. 2015
  4. MA, Lan, SASAKI, Taisuke, Xinsheng Huang, Yasumasa Chino, OHKUBO, Tadakatsu, HONO, Kazuhiro. Effect of micro-alloying Cu and Zr on the microstructure and mechanical properties of AZ91 alloy. Mg2015. 2015
  5. SASAKI, Taisuke, BHATTACHARJEE, Tilak, SUH, Byeong-Chan, Taiki Nakata, Nack Joon Kim, Shigeharu Kamado, OHKUBO, Tadakatsu, HONO, Kazuhiro. Role of Zr in the microstructure evolution in Mg-Zn-Zr based wrought alloys. Mg2015. 2015
  6. OHKUBO, Tadakatsu, SASAKI, Taisuke, SEPEHRI AMIN, Hossein, LIU, Jun, AKIYA, Takahiro, KOGA, Shouta, OIKAWA, Tohru, HONO, Kazuhiro. ネオジム磁石のマルチスケール組織解析. 材料の微細組織と機能性第133委員会第228回研究会. 2015
  7. SASAKI, Taisuke, OHKUBO, Tadakatsu, Yukio Takada, Takeshi Sato, Akira Kato, Yuji Kaneko, HONO, Kazuhiro. NdリッチGa添加Nd-Fe-B磁石の微細組織解析. 日本金属学会 第157回講演大会. 2015
  8. SUKEGAWA, Hiroaki, WEN, ZhenChao, SCHEIKE, Thomas, INOMATA, Kouichiro, OHKUBO, Tadakatsu, HONO, Kazuhiro, MITANI, Seiji. ホイスラー合金Co2FeAl薄膜を用いた強磁性トンネル接合と垂直磁化膜. 日本金属学会2015年秋期講演大会. 2015
  9. SASAKI, Taisuke, OHKUBO, Tadakatsu, Yukio Takada, Takeshi Sato, Akira Kato, Yuji Kaneko, HONO, Kazuhiro. Nd リッチGa 添加Nd-Fe-B 磁石の微細組織解析. 日本磁気学会 第39回学術講演会. 2015
  10. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, Y. Kaneko, Y. Takada, A. Kato, HONO, Kazuhiro. Grain boundary/Interface modification of Nd-Fe-B sintered magnets by low melting temperature Nd-TM (TM : Cu, Al, Zn) alloys. Magnetic Society of Japan (MSJ). 2015
  11. SUKEGAWA, Hiroaki, HADORN, Jason Paul, OHKUBO, Tadakatsu, HONO, Kazuhiro, MITANI, Seiji. 超薄Co2FeAl/MgAl2O4エピタキシャル積層構造を用いた垂直磁化膜の作製. 第39回日本磁気学会学術講演会. 2015
  12. SEELAM, Uma Maheswara Rao, L. Lihua, AKIYA, Takahiro, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, M. Yano, N. Sakuma, A. Manabe, A. Kato, HONO, Kazuhiro. Effect of metallic glass infiltration on the coercivity and microstructure of Nd-Fe-B hot-deformed magnets. The 39th Annual Conference on MAGNETICS in Japan. 2015
  13. SEPEHRI AMIN, Hossein, AKIYA, Takahiro, LIU, Jun, OHKUBO, Tadakatsu, HONO, Kazuhiro. Grain boundary structure/chemistry modifications of Nd-Fe-B permanent magnets. 産学協力研究アモルファス・ナノ材料第147委員会, 第127回研究会. 2015
  14. LEE, Hwachol, SUKEGAWA, Hiroaki, LIU, Jun, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Perpendicularly magnetized MnGa polycrystalline film growth on (001)-textured (Mg0.2Ti0.8)O buffer with SiO2/Si substrate. 22nd International Colloquium on Magnetic Films and Surfaces. 2015
  15. SCHEIKE, Thomas, SUKEGAWA, Hiroaki, FURUBAYASHI, Takao, WEN, ZhenChao, INOMATA, Kouichiro, OHKUBO, Tadakatsu, HONO, Kazuhiro, MITANI, Seiji. Temperature dependence of lattice-matched Co2FeAl/Mg-Al-O/CoFe magnetic tunnel junctions. 22nd International Colloquium on Magnetic Films and Surfaces. 2015
  16. OHKUBO, Tadakatsu, SASAKI, Taisuke, SEPEHRI AMIN, Hossein, LIU, Jun, AKIYA, Takahiro, HONO, Kazuhiro. Multi-scale Characterization of Nd-Fe-B Permanent Magnets by FIB-SEM/TEM/3DAP. NIMS Conference 2015. 2015
  17. SUKEGAWA, Hiroaki, SCHEIKE, Thomas, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Toward low resistive epitaxial magnetic tunnel junctions using a spinel-based barrier. The 1st ImPACT International Symposium on Spintronic Memory,. 2015
  18. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, T. Schrefl, HONO, Kazuhiro. Influence of defects to the coercivity of permanent magnets and energy density of nanocomposite magnets; a micromagnetic simulation study. ESICMM-G8 symposium on Next Generation Permanent Magnets. 2015
  19. SEPEHRI AMIN, Hossein, LIU, Lihua, OHKUBO, Tadakatsu, M. Yano, T. Shoji, A. Kato, HONO, Kazuhiro. Thermal stability of coercivity in grain boundary modified anisotropic hot-deformed Nd-Fe-B magnets. INTERMAG 2015. 2015
  20. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, T. Schrefl, HONO, Kazuhiro. Influence of defects to the coercivity of permanent magnets and energy density of nanocomposite magnets; a micromagnetic simulation study. International Symposium on Advanced Permanent Magnetic Materials. 2015
  21. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. 商用ネオジム焼結磁石のマルチスケール組織解析. 春期(第156回)講演大会. 2015
  22. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Influence of defects to the energy density of nanocomposite Nd-Fe-B/Fe magnets; a micromagnetic simulation study. Japan Instiute of Metals, 2015 spring meeting. 2015
  23. HONO, Kazuhiro, OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, AKIYA, Takahiro. Dyフリー高保磁力Nd-Fe-B磁石. 日本金属学会第156回春季講演大会. 2015
  24. SASAKI, Taisuke, OHKUBO, Tadakatsu, Yasuhiro Une, Masato Sagawa, HONO, Kazuhiro. Multi-Scale Characterization of Nd-Fe-B sintered magnet . TMS2015 Annual Meeting and Exhibition. 2015
  25. IKHTIAR, Ikhtiar, KASAI, Shinya, ITOH, Akihide, TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Temperature dependence of magneto-transport properties in Co2Fe(Ga0.5Ge0.5)/Cu lateral spin valves . 第62回応用物理学会春季学術講演会. 2015
  26. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Microstructure analysis of battery materials using 3D atom probe tomography. 材料の微細組織と機能性・第133委員会 第225回研究会. 2015
  27. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, SASAKI, Taisuke, HONO, Kazuhiro. 走査・透過電子顕微鏡及びアトムプローブによる 組織解析とその応用. 電子顕微鏡解析技術フォーラム. 2015
2014
  1. SASAKI, Taisuke, BHATTACHARJEE, Tilak, ELSAYED, Fady Refaat, OHKUBO, Tadakatsu, Shigeharu Kamado, HONO, Kazuhiro. Development of Heat Treatable Wrought Magnesium Alloys. 6th Asian Symposium on Magnesium Alloys. 2014
  2. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, SASAKI, Taisuke, HONO, Kazuhiro. FIB-SEM/TEM/3DAPによるマルチスケール組織解析. 日本顕微鏡学会第58回シンポジウム. 2014
  3. OHKUBO, Tadakatsu, SASAKI, Taisuke, HONO, Kazuhiro. STEM/アトムプローブによるナノ組織解析. 日本原子力学会「2014年秋の大会」. 2014
  4. IKHTIAR, Ikhtiar, KASAI, Shinya, ITOH, Akihide, TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Magneto-transport and microstructure properties of Co2Fe(Ga0.5Ge0.5)/Cu lateral spin valves. The 38th Annual Conference on MAGNETICS in Japan. 2014
  5. AKIYA, Takahiro, SEPEHRI AMIN, Hossein, LIU, Jun, LIU Lihua, OHKUBO, Tadakatsu, HIOKI Keiko, HATTORI Atsushi, HONO, Kazuhiro. Low eutectic temperature alloy diffusion process for hot-deformed Nd-Fe-B magnet. 第38回 日本磁気学会学術講演会. 2014
  6. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro, K. Guth, O. Gutfleisch. Anisotropy inducement mechanism in hydrogen disproportionation desorption recombination (HDDR) processed Nd-Fe-B powders. Magnetic Society of Japan (MSJ). 2014
  7. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, H. Yamamura, T. Saito, H. Iba, M. Ohnuma, HONO, Kazuhiro. Atom probe tomography study on amorphous SiO anode materials. Atom Probe Tomography & Microscopy 2014. 2014
  8. LIU, Jun, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HIOKIKeiko, HATTORIAtsushi, HONO, Kazuhiro. Atom probe tomography and electron microscopy study on hot-deformed Nd-Fe-B magnets. Atom Probe Tomography & Microscopy 2014. 2014
  9. SASAKI, Taisuke, MA, Lan, BHATTACHARJEE, Tilak, OHKUBO, Tadakatsu, HONO, Kazuhiro. Development of precipitation hardenable wrought magnesium alloy from 3DAP/TEM study. Atom Probe Tomography and Microscopy 2014. 2014
  10. HONO, Kazuhiro, SEPEHRI AMIN, Hossein, AKIYA, Takahiro, LIU, Jun, OHKUBO, Tadakatsu, Atsushi Hattori, Keiko Hioki. Dy-free high coercivity Nd-Fe-B hot-deformed magnets. 15th Inter Conf on Rapidly Quenched & Metastable Materials (RQ15. 2014
  11. SEELAM, Uma Maheswara Rao, OHKUBO, Tadakatsu, Hajime Nakamura, HONO, Kazuhiro. Coercivity and microstructure of Tb4O7 grain boundary diffusion processed sintered (Nd,Dy)-Fe-B magnets. Rare earth and future permanent magnets (REPM2014). 2014
  12. HONO, Kazuhiro, SEPEHRI AMIN, Hossein, AKIYA, Takahiro, LIU, Jun, OHKUBO, Tadakatsu, Keiko Hioki, Atsushi Hattori. Dy-free high coercivity Nd-Fe-B hot-deformed magnets. REPM2014. 2014
  13. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. SEM・TEM・3DAPによるネオジム磁石のマルチスケール組織解析. アモルファス・ナノ材料第147委員会第122回研究会. 2014
  14. SEPEHRI AMIN, Hossein, LIU, Jun, AKIYA, Takahiro, OHKUBO, Tadakatsu, K. Hioki, A. Hattori, HONO, Kazuhiro. A multi-scale approach to develop high coercivity Dy-free permanent magnets. CIMTEC 2014, 6th Forum on New Materials. 2014
  15. IKHTIAR, Ikhtiar, KASAI, Shinya, ITOH, Akihide, TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Heusler alloy-based lateral spin valves for read head applications in high density hard disk drives. 磁気記録・情報ストレージ研究会. 2014
  16. AKIYA, Takahiro, LIU, Jun, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, Keiko Hioki, Atsushi Hattori, HONO, Kazuhiro. 熱間加工ネオジム磁石に対する低共晶温度合金拡散法. 粉体粉末冶金協会 平成26年度春季大会. 2014
  17. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro, NAKATA TAIKI, KAMADO Shigeharu. 熱処理型Mg-Sn基展伸合金の開発. 軽金属学会 第126回 春季大会. 2014
  18. SEPEHRI AMIN, Hossein, LIU, Jun, OHKUBO, Tadakatsu, HONO, Kazuhiro. Microstructure and magnetic properties of Mn-X (X=Rh, Bi, Al) thin films. G8 Project Workshop. 2014
  19. SUKEGAWA, Hiroaki, MITANI, Seiji, OHKUBO, Tadakatsu, INOMATA, Kouichiro, HONO, Kazuhiro. Spin-transfer torque switching in an Mg-Al-O based magnetic tunnel junction. IEEE International Magnetics Conference, INTERMAG Europe 2014. 2014
  20. HONO, Kazuhiro, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, AKIYA, Takahiro. Towards the development of Dy-free high coercivity Nd-Fe-B permanent magnets. IEEE International Magnetics Conference. 2014
  21. IKHTIAR, Ikhtiar, KASAI, Shinya, ITOH, Akihide, TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Magneto-transport and microstructure of Co2Fe(Ga0.5Ge0.5)/Cu lateral spin valves prepared by top-down microfabrication process. IEEE International Magnetics Conference (INTERMAG 2014). 2014
  22. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro, K. Guth, O. Gutfleisch. Anisotropy inducement mechanism in hydrogen disproportionation desorption recombination processed Nd-Fe-B powders. IEEE International Magnetics Conference (Intermag). 2014
  23. HONO, Kazuhiro, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu. Toward the development of Dy-free high coercivity Nd-Fe-B permanent magnets. Deutsche Physikalische Gesellschaft Fr&#252;hjahrstagung. 2014
  24. OHKUBO, Tadakatsu, GRUBER, Maria Theresa, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. マイクロマグネティクス計算によるNd-Fe-B磁石磁化過程の検討. 日本金属学会2014年春期講演大会. 2014
  25. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro, UNE Yasuhiro, SAGAWA Masato. 微細粒焼結磁石の組織と保磁力に及ぼす炭素濃度の影響. 日本金属学会春季講演大会. 2014
  26. AKIYA, Takahiro, L.H.Liu, LIU, Jun, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, KeikoHioki, AtsushiHattori, HONO, Kazuhiro. 熱間加工ネオジム磁石に対する変形拘束拡散法の開発. 2014年春期講演大会(第154回)日本金属学会講演大会. 2014
  27. IKHTIAR, Ikhtiar, KASAI, Shinya, ITOH, Akihide, TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, MITANI, Seiji, HONO, Kazuhiro. Magneto-transport properties of Co2Fe(Ga0.5Ge0.5)/Cu lateral spin valve devices. 第61回応用物理学会春季学術講演会. 2014
  28. ITOH, Akihide, OHKUBO, Tadakatsu, KASAI, Shinya, TAKAHASHI, Yukiko, MITANI, Seiji, HONO, Kazuhiro. Co2FeGa0.5Ge0.5/Cu非局所スピンバルブ素子のナノ組織解析. 応用物理学会春季学術講演会. 2014
  29. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, GRUBER, Maria Theresa, LIU, Jun, AKIYA, Takahiro, SASAKI, Taisuke, HONO, Kazuhiro. マイクロマグマティックス計算による 異方性Nd-Fe-B磁石の磁化過程. アモルファス・ナノ材料第147委員会第122回研究会. 2014
  30. ITOH, Akihide, OHKUBO, Tadakatsu, KASAI, Shinya, TAKAHASHI, Yukiko, MITANI, Seiji, HONO, Kazuhiro. Co2FeGa0.5Ge0.5/Cu面内スピンバルブ素子 のナノ組織解析. 日本顕微鏡学会第38回関東支部講演会. 2014
2013
  1. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. マイクロマグネティクス計算によるネオジム磁石磁化過程の解析. 磁性材料研究会. 2013
  2. SASAKI, Taisuke, ELSAYED, Fady Refaat, Takahashi Hiroki, Kamado Shigeharu, OHKUBO, Tadakatsu, HONO, Kazuhiro. Development of heat treatable Mg-Sn-Zn wrought alloys. THERMEC '2013. 2013
  3. AKIYA, Takahiro, LIU, Jun, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro, Keiko Hioki, Atsushi Hattori. 熱間加工バルクネオジム磁石へのRE-Cu共晶合金の低温拡散プロセス. マグネティクス研究会. 2013
  4. HONO, Kazuhiro, OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein. Nd-Fe-B磁石の高保磁力化. CREST・さきがけ元素戦略領域合同第一回公開シンポジウム. 2013
  5. LIU, Jun, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HIOKI Keiko, HATTORI Atsushi, HONO, Kazuhiro. Microstructure evolution of hot-deformed Nd-Fe-B anisotropic magnets. 58th Annual Magnetism and Magnetic Materials Conference. 2013
  6. AKIYA, Takahiro, LiuLihua, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HiokiKeiko, HattoriAtsushi, HONO, Kazuhiro. Low temperature diffusion process of rare-earth copper eutectic alloy for hot-deformed Nd-Fe-B bulk magnets. The 58th Annual Magnetism and Magnetic Materials conference. 2013
  7. SEELAM, Uma Maheswara Rao, OHKUBO, Tadakatsu, ABE, Taichi, HIROSAWA, Satoshi, HONO, Kazuhiro. Mechanism of Shell Structure Formation by HRE Grain Boundary Diffusion Process of Sintered Nd-Fe-B Magnets. 58th Annual Magnetism and Magnetic Materials (MMM) Conference, 2. 2013
  8. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. Atom probe analyses of interfaces in Nd-Fe-B permanent magnets for higher coercivity. AVS 60th International Symposium & Exhibition. 2013
  9. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, KODZUKA, Masaya, H. Yamamura, T. Saito, H. Iba, HONO, Kazuhiro. Atom probe tomography study on amorphous SiO anode materials before and after the first Li insertion/extraction cycle. The 54th Battery Symposium in Japan. 2013
  10. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, KODZUKA, Masaya, H. Yamamura, T. Saito, H. Iba, HONO, Kazuhiro. Atom probe tomography study on amorphous SiO anode materials before and after the first Li insertion/extraction cycle. The 54th Battery Symposium in Japan. 2013
  11. SASAKI, Taisuke, Elsayed Fady Refaat, OHKUBO, Tadakatsu, NAKATA Taiki, KAMADO Shigeharu, HONO, Kazuhiro. Na, Mnを微量添加したMg-5Sn-4Zn-2Al合金押出材の機械的特性と微細組織. 日本金属学会 秋期講演大会. 2013
  12. MA, Lan, SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. Mg-2.4Zn-2Liの時候効果に及ぼすAlの影響. JIM Autumn Meeting . 2013
  13. HONO, Kazuhiro, OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, Nakamura Tetsuya, Suzuki Motohiro. 永久磁石材料の微細構造と保磁力. SPring-8シンポジウム2013. 2013
  14. TAKAHASHI, Yukiko, HASE, Naoki, KODZUKA, Masaya, ITOH, Akihide, Koganezawa Tomoyuki, FURUBAYASHI, Takao, B, Varaprasad, LI, Songtian, OHKUBO, Tadakatsu, HONO, Kazuhiro. Co2Mn(Ga0.25Ge0.75)ホイスラー合金のDO3不規則評価とそれを用いたCPP-GMR素子の伝導特性. 日本磁気学会学術講演会. 2013
  15. AKIYA, Takahiro, L. H. Liu, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HiokiKeiko, HattoriAtsushi, HONO, Kazuhiro. RE−Cu共晶合金低温拡散法のNd-Fe-Bバルク磁石への応用. 日本磁気学会学術講演会. 2013
  16. OHKUBO, Tadakatsu, GRUBER, Maria Theresa, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. 複相組織を有する永久磁石の有限要素マイクロマグネティクス計算. 第37回 日本磁気学会学術講演会. 2013
  17. GRUBER, Maria Theresa, OHKUBO, Tadakatsu, Suzuki, Shima Toshiyuki, HONO, Kazuhiro. Microstructure and coercivity relationships in Nd-Fe-B model thin films. The 37th Annual Conference on Magnetics in Japan. 2013
  18. HONO, Kazuhiro, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, LIU, Jun, SASAKI, Taisuke, AKIYA, Takahiro. Microstructure and coercivity relationships in Nd-Fe-B permanent magnets. 第37回日本磁気学会学術講演会. 2013
  19. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Finite element micromagnetic simulations of hot-deformed Nd-Fe-B magnets with directional intergranular phases. the 37th annual conference on MAGNETICS in Japan. 2013
  20. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Finite element micromagnetic simulations of hot-deformed Nd-Fe-B magnets with directional intergranular phases. the 37th annual conference on MAGNETICS in Japan. 2013
  21. HONO, Kazuhiro, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu. Toward the development of Dy-free high coercivity Nd-Fe-B permanent magnet. PRICM-8 - 2013. 2013
  22. SUKEGAWA, Hiroaki, NIIZEKI, Tomohiko, MITANI, Seiji, OHKUBO, Tadakatsu, INOMATA, Kouichiro, HONO, Kazuhiro. Giant tunnel magnetoresistance in MgAlOx-based magnetic tunnel junctions. JSPS York-Tohoku Research Symposium on Magnetic Materials and Sp. 2013
  23. OHKUBO, Tadakatsu, HIROSAWA, Satoshi, HONO, Kazuhiro. 種々の永久磁石化合物における高温特性の評価. 日本金属学会2013年春期(第152回)講演大会. 2013
  24. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. 先端磁性材料のマルチスケール組織解析. 顕微鏡 学会関東支部講演会. 2013
  25. SUKEGAWA, Hiroaki, MITANI, Seiji, NIIZEKI, Tomohiko, OHKUBO, Tadakatsu, INOMATA, Kouichiro, HONO, Kazuhiro. Epitaxial magnetic tunnel junctions with a nomocrystalline Al2O3 barrier. The 12th Joint MMM/Intermag Conference. 2013
  26. LIU, Jun, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Microstructure and coercivity relationships of hot-deformed Nd-Fe-B magnets . 12th Joint MMM/Intermag Conference. 2013
2012
  1. SEPEHRI AMIN, Hossein, D. Prabhu, HAYASHI, Masamitsu, OHKUBO, Tadakatsu, K. Hioki, A. Hattori, HONO, Kazuhiro. Enhancement of coercivity in rapidly quenched Nd-Fe-B powders by the Nd-Cu diffusion process. ICAUMS 2012. 2012
  2. AKIYA, Takahiro, SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. Microstructural study for degraded Nd-Fe-B magnet annealed at 400dC. ICAUMS 2012. 2012
  3. SUKEGAWA, Hiroaki, MITANI, Seiji, OHKUBO, Tadakatsu, INOMATA, Kouichiro, HONO, Kazuhiro. Enhanced tunnel magnetoresistance in magnetic tunnel junctionswith a cubic Mg-Al-O barrier. International Conference of AUMS (ICAUMS2012). 2012
  4. AKIYA, Takahiro, SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. 微結晶Nd-Fe-B焼結磁石の熱処理による微細組織変化と保磁力. 日本金属学会第151回秋期講演大会. 2012
  5. KARAKIDA, Syunya, OHKUBO, Tadakatsu, SASAKI, Taisuke, HONO, Kazuhiro, HIDAKA Tetsuya, ISHIZAKA Chikara. H-HAL法による(Nd,Dy)-Fe-B焼結磁石のNd濃度による保磁力と組織の変化 . 日本金属学会秋季大会. 2012
  6. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro, Xu Shiwei, Takahashi Hiroki, Oh-ishi Keiichiro, Kamado Shigeharu. Mg-1.2Sn-1.7Zn-2.0Al 合金押出材の機械的特性と微細組織. 日本金属学会秋季大会. 2012
  7. SUKEGAWA, Hiroaki, MITANI, Seiji, OHKUBO, Tadakatsu, INOMATA, Kouichiro, HONO, Kazuhiro. CoFe/Mg-Al-Ox/CoFe接合のトンネル磁気抵抗効果とスピン注入磁化反転. 2012年 秋季 第73回応用物理学会学術講演会. 2012
  8. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, HONO, Kazuhiro, Thomas Schrefl. THE ROLE OF GRAIN BOUNDARY PHASE ON THE MAGNETIZATION PROCESS OF ND-FE-B MAGNET. REPM 2012. 2012
  9. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro, UNE Yasuhiro, Sagawa Masato. MULTI-SCALE MICROSTRUCTURE CHARACTERIZATION OF. Rare Earth Permanent Magnets and their Appllications (REPM. 2012
  10. SUKEGAWA, Hiroaki, MITANI, Seiji, NIIZEKI, Tomohiko, OHKUBO, Tadakatsu, INOMATA, Kouichiro, HONO, Kazuhiro. Enhanced tunnel magnetoresistance in magnetic tunnel junctions with an epitaxial Mg-Al-O barrier. The 19th International Conference on Magnetism (ICM2012). 2012
  11. OHKUBO, Tadakatsu. マルチスケール組織解析による Dyフリー希土類磁石の保磁力機構解明と向上. 磁気応用技術シンポジウム. 2012
  12. KODZUKA, Masaya, OHKUBO, Tadakatsu, HONO, Kazuhiro. Atom Probe Analyses of CPP-GMR Deices with Heusler Alloy Electrodes and an Ag Spacer on MgO Substrates. IFES2012 . 2012
  13. SASAKI, Taisuke, MENDIS, Chamini Lakshi, BHATTACHARJEE, Tilak, OISHI Keiichiro, OHKUBO, Tadakatsu, HONO, Kazuhiro. 3DAP / TEM Study of the Precipitation Behavior in Magnesium Alloys. International Field Emission Symposium. 2012
  14. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro, UNE Yasuhiro, SAGAWA Masato. Correlative Multi-Scale Characterization of Nd-Fe-B Sintered Magnet. International Field Emission Symposium. 2012
  15. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Atom Probe Tomography of Nd-Fe-B Permanent Magnets. IFES2012. 2012
  16. HONO, Kazuhiro, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu. Nd-Fe-B磁石の高保磁力化をめざした微細組織制御. JSPM平成24年度春季大会. 2012
  17. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, Masao Yano, Tetsuya Shoji, HONO, Kazuhiro. the International Magnetics Conference, INTERMAG 2012. the International Magnetics Conference, INTERMAG 2012. 2012
  18. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro, N. Nozawa, T. Murata, T. Nishiuchi, S. Hirosawa. Microstructure and magnetic properties of the spark plasma sintered HDDR processed Nd-Fe-B magnets. Japan Institute of Metals (JIM), Annual Autumn Meeting 2012. 2012
  19. SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro, UNE Yasuhiro, SAGAWA MASATO. 超微細粒Nd-Fe-B 焼結磁石のSEM・TEM によるマルチスケール組織解析. 日本金属学会 2012年春季大会. 2012
  20. SUKEGAWA, Hiroaki, MITANI, Seiji, NIIZEKI, Tomohiko, OHKUBO, Tadakatsu, INOMATA, Kouichiro, HONO, Kazuhiro. 準安定立方晶Al2O3を用いたエピタキシャル強磁性トンネル接合. 2012年春季 第59回応用物理学関係連合講演会. 2012
  21. HONO, Kazuhiro, MENDIS, Chamini Lakshi, SASAKI, Taisuke, OHKUBO, Tadakatsu, BHATTACHARJEE, Tilak. Enhancement of Precipitation Hardening of Magnesium Alloys by Microalloying. TMS2012 141st Annual Meeting and Exhibition. 2012
  22. HONO, Kazuhiro, OHKUBO, Tadakatsu. Atom probe tomography of inorganic materials and their devices using ultraviolet laser atom probe. TMS 2012 Annual Meeting. 2012
  23. OHKUBO, Tadakatsu, HONO, Kazuhiro. Multiscale Characterization by FIB-SEM/TEM/Laser Assisted Atom Probe. 第1回 NIMS-IMS VASTワークショップ. 2012
2011
  1. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, HONO, Kazuhiro, T. Schrefl. マイクロマグネティクスシミュレーションによるNd-Fe-B焼結磁石磁化過程の検討. 2011年秋期(第149回)講演大会. 2011
  2. SEPEHRI AMIN, Hossein, Yasuhiro Une, OHKUBO, Tadakatsu, HONO, Kazuhiro, Masato Sagawa. Microstructure and magnetic properties of fine grained high coercivity Nd-Fe-B sintered magnets. Japan Institute of Metals (JIM), Fall meeting 2011. 2011
  3. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. マルチスケール組織解析による保磁力発現機構の解明. 第35回日本磁気学会学術講演会. 2011
  4. SUKEGAWA, Hiroaki, NIIZEKI, Tomohiko, MITANI, Seiji, OHKUBO, Tadakatsu, INOMATA, Kouichiro, HONO, Kazuhiro. エピタキシャルCoFe/MgAl2O4/CoFe(001)強磁性トンネル接合の高TMR化と低抵抗化. 第35回 日本磁気学会学術講演会 . 2011
  5. SEPEHRI AMIN, Hossein, Yasuhiro Une, OHKUBO, Tadakatsu, HONO, Kazuhiro, Masato Sagawa. Microstructure of fine grained high coercivity Nd-Fe-B sintered magnet. The Magnetics Society of Japan (MSJ). 2011
  6. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, Toshiyuki SHIMA, HONO, Kazuhiro. Grain boundary and interface chemistry of a Dy-free Nd-Fe-B sintered magnet. The Magnetics Society of Japan (MSJ). 2011
  7. SUKEGAWA, Hiroaki, XIU, Huixin, OHKUBO, Tadakatsu, NIIZEKI, Tomohiko, MITANI, Seiji, INOMATA, Kouichiro, HONO, Kazuhiro. Coherent tunneling effect in a MgAl2O4 spinel based magnetic tunnel junction. 5th International Workshop on Spin Currents. 2011
  8. MENDIS, Chamini Lakshi, JAYAMANI, Jayaraj, OISHI, Keiichiro, OHKUBO, Tadakatsu, HONO, Kazuhiro. Enhanced precipitation hardening of Mg-Ca based alloys through the formation of GP zones. Light Metal Technology 2011. 2011
  9. OHKUBO, Tadakatsu, XIU, Huixin, SEPEHRI AMIN, Hossein, T. Nishiuchi, S. Hirosawa, HONO, Kazuhiro. Nd-Fe-B磁石における焼結後熱処理による磁気特性と組織変化. 日本顕微鏡学会 第67回学術講演会. 2011
  10. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, Y. Une, HONO, Kazuhiro, M. Sagawa. Microstructure of fine grained high coercivity Nd-Fe-B sintered magnet. InterMag 2011. 2011
  11. SUKEGAWA, Hiroaki, XIU, Huixin, OHKUBO, Tadakatsu, NIIZEKI, Tomohiko, MITANI, Seiji, INOMATA, Kouichiro, HONO, Kazuhiro. Improvement of tunnel magnetoresistance ratio in fully-epitaxial MgAl2-Ox based magnetic tunnel junctions. Intermag 2011. 2011
  12. AMMANABROLU, Rajanikanth, KASAI, Shinya, OHKUBO, Tadakatsu, HONO, Kazuhiro, Norikazu Ohshima, Hironobu Tanigawa, Eiji Kariyada. Current-Induced Domain Wall Motion in Co/Ni Laminated Films with various annealing conditions. Intermag 2011. 2011
  13. KODZUKA, Masaya, OHKUBO, Tadakatsu, HONO, Kazuhiro. 絶縁性基板上薄膜のレーザー補助アトムプローブ解析. 第149回日本金属学会講演大会. 2011
  14. BHATTACHARJEE, Tilak, MENDIS, Chamini Lakshi, OHKUBO, Tadakatsu, HONO, Kazuhiro. Mg-2.4Zn-0.1Ag-0.1Ca (at. %) 鋳造合金の微細組織生成. 日本鉄鋼協会第161回春季講演大会. 2011
  15. SUKEGAWA, Hiroaki, XIU, Huixin, OHKUBO, Tadakatsu, NIIZEKI, Tomohiko, KASAI, Shinya, FURUBAYASHI, Takao, MITANI, Seiji, INOMATA, Kouichiro, HONO, Kazuhiro. エピタキシャルMg-Al-Oxバリア層を用いた強磁性トンネル接合における大きなトンネル磁気抵抗. 2011年春季 第58回 応用物理学関係連合講演会. 2011
  16. MENDIS, Chamini Lakshi, OISHI, Keiichiro, OHKUBO, Tadakatsu, HONO, Kazuhiro. Effect of In additions on the age hardening response and microstructures of Mg-0.3Ca (at%) alloys. TMS annual meeting 2011. 2011
  17. MENDIS, Chamini Lakshi, OISHI, Keiichiro, OHKUBO, Tadakatsu, HONO, Kazuhiro. Effect of In additions on the age hardening response and microstructures of Mg-0.3Ca (at%) alloys. TMS annual meeting 2011. 2011
  18. OHKUBO, Tadakatsu. FIB-SEM/TEM/3DAPによるNdFeB磁石のマルチスケール組織解析. 「高性能磁石材料研究とナノ計測技術」研究会. 2011
2010
  1. SUKEGAWA, Hiroaki, XIU, Huixin, OHKUBO, Tadakatsu, NIIZEKI, Tomohiko, KASAI, Shinya, FURUBAYASHI, Takao, MITANI, Seiji, INOMATA, Kouichiro, HONO, Kazuhiro. Improvement of bias voltage dependence in lattice-matched MgAl2O4-based magnetic tunnel junctions. ICAUMS2010 (International Conference of AUMS). 2010
  2. OHKUBO, Tadakatsu, HONO, Kazuhiro. FIB-SEM/TEM/3DAPによるマルチスケール組織解析. マテリアル電子線トモグラフィ研究部会講演会. 2010
  3. HONO, Kazuhiro, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu. Microstructure and coercivity relationships in permanent magnets for energy-efficient devices. 55th Annual Conference on Magnetism and Magnetic Materials. 2010
  4. MENDIS, Chamini Lakshi, OISHI, Keiichiro, OHKUBO, Tadakatsu, HONO, Kazuhiro. Effect of In additions on the age hardening response and microstructures of Mg-0.3Ca (at%) alloys. 日本金属学会2010年(第147回)秋期講演大会. 2010
  5. OISHI, Keiichiro, MENDIS, Chamini Lakshi, OHKUBO, Tadakatsu, HONO, Kazuhiro. Mg-2.4at%Zn合金の時効硬化性に及ぼす微量添加元素の効果. 2010日本金属学会秋期大会. 2010
  6. SUKEGAWA, Hiroaki, XIU, Huixin, OHKUBO, Tadakatsu, NIIZEKI, Tomohiko, KASAI, Shinya, FURUBAYASHI, Takao, MITANI, Seiji, INOMATA, Kouichiro, HONO, Kazuhiro. エピタキシャルFe/MgAl2O4スピネル/Fe強磁性トンネル接合の作製. 日本金属学会2010年秋期(第147回)大会. 2010
  7. KODZUKA, Masaya, OHKUBO, Tadakatsu, Atsushi Sugihara, Koki Takanashi, Key Yakushiji, Akio Fukushima, HONO, Kazuhiro. 巨大ペルチェ効果を示すAu/Cu-Ni接合の3DAP解析. 日本金属学会2010年秋期(第147回)講演大会. 2010
  8. SUKEGAWA, Hiroaki, XIU, Huixin, OHKUBO, Tadakatsu, NIIZEKI, Tomohiko, KASAI, Shinya, FURUBAYASHI, Takao, MITANI, Seiji, INOMATA, Kouichiro, HONO, Kazuhiro. スピネルMgAl2O4バリアを用いた格子整合強磁性トンネル接合〜マグナリウム(Mg-Al合金)層による作製方法. 2010年秋季 第71回 応用物理学会学術講演会. 2010
  9. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. Dy拡散処理したNd-Fe-B焼結磁石のマルチスケール組織解析. 第34回日本磁気学会学術講演会. 2010
  10. SUKEGAWA, Hiroaki, XIU, Huixin, OHKUBO, Tadakatsu, NIIZEKI, Tomohiko, KASAI, Shinya, FURUBAYASHI, Takao, MITANI, Seiji, INOMATA, Kouichiro, HONO, Kazuhiro. エピタキシャルMgAl2O4およびγ-Al2O3バリア層を有する強磁性トンネル接合. 第34回日本磁気学会学術講演会. 2010
  11. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro, Takeshi Nishiuchi, Satoshi Hirosawa. Coercivity enhancement of Nd-Fe-B HDDR processed powders using diffusion of Nd-Cu alloy. The 34th Annual Conference on MAGNETICS. 2010
  12. RAGHAVAN, Gopalan, CHEN, Yimeng, OHKUBO, Tadakatsu, HONO, Kazuhiro, X.Y.Xiong, O. Gutfleisch. Laser assisted three dimensional atom probe analysis of microchemistry and its correlation to coercivity in Sm(Co0.74Fe0.1Cu0.12Zr.04)7.4 ribbons. REPM'10. 2010
  13. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, Takeshi Nishiuchi, Satoshi Hirosawa, HONO, Kazuhiro. 3D atom probe investigation of the microstructure evelution during the HDDR process of Nd12.5Fe72.8Co8.0B6.5Ga0.2 powder. REPM’10. 2010
  14. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, LI, Wanfeng, HONO, Kazuhiro. Grain boundary structure and chemistry of Dy-containing and Dy-diffused Nd-Fe-B sintered magnets. REPM'10. 2010
  15. RAGHAVAN, Gopalan, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro, N. Nozawa, T. Nishiuchi, S. Hirosawa. Microstructure and magnetic properties of hot-deformed anisotropic HDDR Nd-Fe-B magnets processed by spark plasma sintering . REPM'10. 2010
  16. OHKUBO, Tadakatsu, HONO, Kazuhiro. LA3DAP/TEM/FIB-SEMによるマルチスケール組織解析. 解析講演会. 2010
  17. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Microstructure and coercivity of Dy diffusion processed Nd-Fe-B sintered magnets. ISAMMA 2010. 2010
  18. SUKEGAWA, Hiroaki, XIU, Huixin, FURUBAYASHI, Takao, NIIZEKI, Tomohiko, Wenhong Wang, KASAI, Shinya, OHKUBO, Tadakatsu, MITANI, Seiji, INOMATA, Kouichiro, HONO, Kazuhiro. Magnetic tunnel junctions with a spinel MgAl2O4 barrier. ISAMMA2010. 2010
  19. RAGHAVAN, Gopalan, CHEN, Yimeng, OHKUBO, Tadakatsu, HONO, Kazuhiro, X.Y.Xiong, O. Gutfleisch. Investigation on microchemistry dependent coercivity variation in Sm(Co0.74Fe0.1Cu0.12Zr.04)7.4 magnet. ISAMMA 2010. 2010
  20. HONO, Kazuhiro, OHKUBO, Tadakatsu. Advances in laser assisted atom probe and its applications to the interface characterizations of permanent magnets. 13th Inter. Conf. Intergranular Interphase Boundaries in Materia. 2010
  21. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, T. Nishiuchi, S. Hirosawa, HONO, Kazuhiro. レーザーアトムプローブによる水素不均化Nd-Fe-B磁石合金中軽元素の定量解析. 第66回学術講演会. 2010
  22. OHKUBO, Tadakatsu, CHEN, Yimeng, KODZUKA, Masaya, LI, Fang, OISHI, Keiichiro, HONO, Kazuhiro. 短波長レーザーアトムプローブの開発と応用. 第66回学術講演会. 2010
  23. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, LI, Wanfeng, HONO, Kazuhiro, T. Nishiuchi, S. Hirosawa. レーザー補助アトムプローブによるNd-Fe-B磁石粒界の組成解析. 日本金属学会2010年春期(第146回)大会. 2010
  24. SANKAR, Vijaykarthik, TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, HONO, Kazuhiro, S. Ikeda, H. Ohno. TEM study on the effect of Pd capping layers on CoFeB / MgO / CoFeB pseudo spin valves annealed at different temperatures. 日本金属学会2010年春期(第146回)大会. 2010
  25. KODZUKA, Masaya, OHKUBO, Tadakatsu, YAKUSHIJI Kay, SUGIHARA Atsushi, TAKANASHI Koki, FUKUSHIMA Akio, HONO, Kazuhiro. 巨大ペルチェ効果を示すCu-Ni/Au 接合のレーザーアトムプローブ解析. 2010年春季第57回応用物理学関係連合講演会. 2010
  26. SUKEGAWA, Hiroaki, XIU, Huixin, NIIZEKI, Tomohiko, WANG, Wenhong, KASAI, Shinya, FURUBAYASHI, Takao, OHKUBO, Tadakatsu, MITANI, Seiji, INOMATA, Kouichiro, HONO, Kazuhiro. フルエピタキシャルFe/MgAl2O4/Fe強磁性トンネル接合のTMR効果. 第57回応用物理学会関係連合講演会. 2010
  27. OHKUBO, Tadakatsu. 3次元アトムプローブ法の原理とその応用. 3次元ナノ構造解析技術セミナー. 2010
  28. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, T. Nishiuchi, S. Hirosawa, HONO, Kazuhiro. 3D atom probe investigation of the nanostructure development of Nd-Fe-B based HDDR powder. MMM-Intermag joint meeting 2010. 2010
2009
  1. OHKUBO, Tadakatsu, LI, Wanfeng, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. Multi-scale characterization of Nd-Fe-B permanent magnets. 2009 MRS Fall Meeting. 2009
  2. HONO, Kazuhiro, OHKUBO, Tadakatsu. High resolution depth profiling by laser assisted 3D atom probe. International Workshop on High-Resolution Depth Profiling 2009 . 2009
  3. OHKUBO, Tadakatsu. レーザー補助3DAP の進展とその応用. カメカテクニカルセミナー. 2009
  4. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, HONO, Kazuhiro, T. Nishiuchi, S. Hirosawa. HDDR Nd-Fe-B系磁石のナノ組織形成過程. 2009年秋期(第145回)大会. 2009
  5. OISHI, Keiichiro, MENDIS, Chamini Lakshi, OHKUBO, Tadakatsu, HONO, Kazuhiro. Mg-2.3at%Zn合金の時効硬化性と微細組織に及ぼすCa添加の効果. 2009日本金属学会秋期講演大会. 2009
  6. SHAN, Rong, SUKEGAWA, Hiroaki, WANG, Wenhong, KODZUKA, Masaya, FURUBAYASHI, Takao, OHKUBO, Tadakatsu, MITANI, Seiji, INOMATA, Kouichiro, HONO, Kazuhiro. ホイスラー合金Co2FeAl0.5Si0.5とスピネルMgAl2O4トンネルバリア用いたエピタキシャル強磁性トンネル接合. 2009年秋期(145回)日本金属学会講演会. 2009
  7. OHKUBO, Tadakatsu, CHEN, Yimeng, KODZUKA, Masaya, MORITA, Koji, HONO, Kazuhiro. 短波長レーザー3DAPによるセラミックス材料の原子レベル組織解析. 2009年秋期(第145回)大会. 2009
  8. CHEN, Yimeng, OHKUBO, Tadakatsu, HONO, Kazuhiro. Optimizing laser pulsing for quantitative atom probe analysis of rare earth magnets. International Atom Probe Workshop. 2009
  9. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro, T. Nishiuchi, S. Hirosawa. Nanostructure development of Nd-Fe-B based HDDR powder. MSJ 2009. 2009
  10. SUKEGAWA, Hiroaki, SHAN, Rong, WANG, Wenhong, KODZUKA, Masaya, FURUBAYASHI, Takao, OHKUBO, Tadakatsu, MITANI, Seiji, INOMATA, Kouichiro, HONO, Kazuhiro. Co2FeAl0.5Si0.5/MgAl2O4/CoFe強磁性トンネル接合のトンネル磁気抵抗効果と微細構造. 第33回日本磁気学会学術講演会. 2009
  11. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro, T. Minowa. The effect of Ga on the grain boundary structure/chemistry of Nd-Fe-B sintered magnets. MSJ,The 33rd Annual Conference on MAGNETICS in Japan. 2009
  12. SHAN, Rong, SUKEGAWA, Hiroaki, WANG, Wenhong, KODZUKA, Masaya, FURUBAYASHI, Takao, OHKUBO, Tadakatsu, MITANI, Seiji, INOMATA, Kouichiro, HONO, Kazuhiro. Co2FeAl0.5Si0.5/(Mg,Al)Ox/CoFe強磁性トンネル接合のTMR効果. 2009年秋季 第70回 応用物理学会 学術講演会. 2009
  13. RAGHAVAN, Gopalan, SEPEHRI AMIN, Hossein, KOPPOJU, Suresh, OHKUBO, Tadakatsu, HONO, Kazuhiro, T, Nishiuchi, S. Hirosawa. Grain orientation and magnetic properties of HDDR Nd-Fe-B magnets in-situ deformed during spark plasma sintering . EUROMAT 2009. 2009
  14. CHEN, Yimeng, OHKUBO, Tadakatsu, HONO, Kazuhiro, Ohta Motoki, Yoshizawa Yoshihito. 3DAP studies on Fe-B based high Bs nanocrystalline soft magnetic alloys. EUROMAT 2009. 2009
  15. RAGHAVAN, Gopalan, CHEN, Yimeng, OHKUBO, Tadakatsu, HONO, Kazuhiro. High saturation magnetization and microstructure in crystalline Fe-P melt-spun ribbons. EUROMAT 2009. 2009
  16. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Effect of Ga in coercivity enhancement of Nd-Fe-B sintered magnets. EUROMAT 2009 . 2009
  17. CHEN, Yimeng, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. Structure of shear bands in Pd40Ni40P20 bulk metallic glass. EUROMAT 2009. 2009
  18. SEPEHRI AMIN, Hossein, LI, Wanfeng, OHKUBO, Tadakatsu, HONO, Kazuhiro, T. Nishiuchi, S. Hirosawa. The effect of Ga on magnetic properties of Nd-Fe-B HDDR powders. EUROMAT 2009 . 2009
  19. SANKAR, Vijaykarthik, TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, S Ikeda, HONO, Kazuhiro, H Ohno. TEM investigation of CoFeB / MgO / CoFeB pseudo spin valves annealed at different temperatures. Intermag 2009. 2009
  20. OHKUBO, Tadakatsu, HONO, Kazuhiro. レーザー補助3次元アトムプローブによる ドーパント分析の可能性. 故障解析技術TF 第35回会合. 2009
  21. SEPEHRI AMIN, Hossein, HONO, Kazuhiro, OHKUBO, Tadakatsu, T. Nishiuchi, S. Hirosawa. HDDR法を施したNd-Fe-B焼結磁石の保磁力に及ぼすGa添加の影響. JIM2009(日本金属学会2009年春期大会). 2009
  22. OHKUBO, Tadakatsu, LI, Wanfeng, HONO, Kazuhiro. Nd-Fe-B磁石の保磁力とナノ組織. 日本金属学会2009年春期(第144回)大会. 2009
  23. SANKAR, Vijaykarthik, TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, S Ikeda, HONO, Kazuhiro, H Ohno. TEM investigation of CoFeB / MgO / CoFeB pseudo spin valves annealed at different temperatures. 2009 Spring Annual Meeting of The Japan Institute of Metals. 2009
  24. OHKUBO, Tadakatsu, LI, Wanfeng, HONO, Kazuhiro. SEM-FIB/TEM/3DAPによるマルチスケール組織解析. 日本顕微鏡学会第33回関東支部講演会. 2009
  25. PARK, Byung Joo, CHEN, Yimeng, OHKUBO, Tadakatsu. Nano structured materials design with phase separation. the MANA International Symposium 2009. 2009
2008
  1. HONO, Kazuhiro, LI, Wanfeng, OHKUBO, Tadakatsu. Microstructure and coercivity of Nd-Fe-B based permanent magnets. 日本磁気学会第163回研究会「ハード・ソフト磁性材料における高性能. 2008
  2. LI, Wanfeng, OHKUBO, Tadakatsu, HONO, Kazuhiro. The coercivity and grain boundary chemistry of Nd-Fe-B HDDR powder. 53rd Annual Conference on Magnetism and Magnetic Materials. 2008
  3. PARK, Byung Joo, OHKUBO, Tadakatsu, HONO, Kazuhiro, Do Hyang Kim. Multi Phase Separation in Metallic Glass Forming System. International Conference on Advanced Structural and Functional M. 2008
  4. PARK, Byung Joo, OHKUBO, Tadakatsu, HONO, Kazuhiro, Do Hyang Kim. Nano-structured materials design with phase separation. Osaka University - NIMS Young Scientist Symposium . 2008
  5. PARK, Byung Joo, OHKUBO, Tadakatsu, HONO, Kazuhiro, Do Hyang Kim. Phase separated nano-structured multiphase in metallic glasses. 日本金属学会2008年秋期大会. 2008
  6. LI, Wanfeng, OHKUBO, Tadakatsu, HONO, Kazuhiro. The origin of the coercivity decrease of fine grained Nd-Fe-B sintered magnets. Japan Institute of Metals 2008 Autumn Meeting. 2008
  7. CHEN, Yimeng, OHKUBO, Tadakatsu, HONO, Kazuhiro, Motoki Ohta, Yoshihito Yoshizawa. FeBCuSiナノ結晶合金における組織解析. 日本金属学会秋季大会. 2008
  8. OHKUBO, Tadakatsu, LI, Wanfeng, HONO, Kazuhiro, T. Nishiuchi, S. Hirosaw. HDDR Nd-Fe-B系磁石のナノ組織と保磁力発現機構. 2008年秋期(第143回)大会. 2008
  9. YOU, Caiyin, OHKUBO, Tadakatsu, TAKAHASHI, Yukiko, HONO, Kazuhiro. Boron segregation in crystallized MgO/amorphous-Co40Fe40B20 thin films. The 32nd Annual Conference on MAGNETICS in Japan. 2008
  10. OHKUBO, Tadakatsu, LI, Wanfeng, HONO, Kazuhiro, T. Nishiuchi, S. Hirosaw. HDDR Nd-Fe-B系磁石のマルチスケール組織解析. 第32回日本磁気学会学術講演会. 2008
  11. LI, Wanfeng, OHKUBO, Tadakatsu, HONO, Kazuhiro. (Nd,Dy)-Fe-B焼結磁石の組織および保磁力における磁場中熱処理の効果. The 32nd Annual Conference on Magnetics in Japan. 2008
  12. HONO, Kazuhiro, LI, Wanfeng, OHKUBO, Tadakatsu. Revisit to the microstructure of Nd-Fe-B sintered magnets at atomic resolution. The 20th Workshop on Rare Earth Permanent Magnets and Applicatio. 2008
  13. HONO, Kazuhiro, OHKUBO, Tadakatsu. Complementary atom probe and TEM analysis of amorphous and nanocrystalline alloys. the 13th International Conference on Rapidly Quenched & Metastab. 2008
  14. OHKUBO, Tadakatsu, CHEN, Yimeng, M. Ohta, Y. Yoshizawa, HONO, Kazuhiro. 3DAP analysis of Fe-B-Cu based high Bs soft magnetic materials. The 51st International Field Emission Symposium. 2008
  15. HONO, Kazuhiro, OHKUBO, Tadakatsu. Nanostructured metallic materials - designing materials by visualization of atoms using 3D atom probe. 51st International Field Emission Symposium. 2008
  16. OHKUBO, Tadakatsu, CHEN, Yimeng, HONO, Kazuhiro. Structural characterization of shear band in bulk metallic glasses. The 6th International Conference on Bulk Metallic Glasses. 2008
  17. OHKUBO, Tadakatsu, LI, Wanfeng, HONO, Kazuhiro, Akiya, T., Kato, H.. The role of Cu addition in the coercivity enhancement of sintered Nd-Fe-B magnets. INTERMAG 2008 Conference. 2008
  18. LI, Wanfeng, OHKUBO, Tadakatsu, HONO, Kazuhiro. Effect of heat treatment on the magnetic property and microstructure of sintered Nd-Fe-B magnets. INTERMAG 2008 Conference. 2008
  19. HONO, Kazuhiro, OHKUBO, Tadakatsu. Nanocrystalline structure evolution in Fe-B-Cu soft magnetic materials. the 9th International Workshop on Non-Crystalline Solids. 2008
  20. BONTA, Srinivasa, OISHI, Keiichiro, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. Microstructure and mechanical properties of bulk nanocrystalline Fe produced by mechanical alloying and spark plasma sintering. 日本金属学会 2008年春期(第142回)大会. 2008
  21. KOPPOJU, Suresh, OISHI, Keiichiro, OHKUBO, Tadakatsu, TAKAHASHI, Yukiko, HONO, Kazuhiro. Spark plasma sintered bulk Nd-Fe-B magnets. 2008 Spring Annual Meeting of The Japan Institute of Metals. 2008
  22. CHEN, Yimeng, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. PdNiPバルク金属ガラスのせん断帯組織解析. 日本金属学会春季大会. 2008
  23. LI, Wanfeng, OHKUBO, Tadakatsu, HONO, Kazuhiro. Effect of heat treatment on the properties and microstructure of sintered NdFeB magnet. 2008 Spring Annual Meeting of The Japan Institute of Metals. 2008
  24. HASE, Naoki, LI, Wanfeng, OHKUBO, Tadakatsu, TAKAHASHI, Yukiko, HONO, Kazuhiro. Nd-Fe-B焼結磁石における最適熱処理の組織及び保磁力への効果. 2008年日本金属学会春期大会. 2008
2007
  1. HONO, Kazuhiro, Golden, Kumar, MONDAL, Kallol, OHKUBO, Tadakatsu. Nanostructure and Plasticity of Bulk Metallic Glasses. MRS 2007 Fall Meeting. 2007
  2. OHKUBO, Tadakatsu, LI, Wanfeng, HONO, Kazuhiro, T. Hanada, T. Akiya, H. Kato. SEM-FIB/TEM/3DAP multiscale structure analysis of sintered Nd-Fe-B magnet. Int. Symp. Future Prospects of Scanning Electron/He+ ion microsc. 2007
  3. HONO, Kazuhiro, OHKUBO, Tadakatsu. レーザ補助広角3次元アトムプローブによるナノ解析. 第28回表面科学セミナー 精密薄膜構造解析の最前線. 2007
  4. TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, HONO, Kazuhiro. 点接触アンドレーエフ反射法によるスピン偏極率測定とハーフメタル探索. 特定領域研究キックオフミーティング「スピン流の創出と制御」. 2007
  5. Katsuhiko Fujii, Koji Fukuya, OHKUBO, Tadakatsu, HONO, Kazuhiro. 高dpaイオン照射した低合金鋼のミクロ組織変化(2). 日本原子力学会2007年秋の大会. 2007
  6. Katsuhiko Fujii, Koji Fukuya, OHKUBO, Tadakatsu, HONO, Kazuhiro. 高dpaイオン照射した低合金鋼中の析出挙動(2). 2007年日本金属学会秋期大会 . 2007
  7. LI, Wanfeng, OHKUBO, Tadakatsu, HONO, Kazuhiro, Masato Sagawa. 小晶粒焼結磁性材料に関する微小構造の研究. JIM 2007 Autumn Annual Meeting. 2007
  8. CHEN, Yimeng, OHKUBO, Tadakatsu, HONO, Kazuhiro, Motoki Ohta, Yoshihito Yoshizawa. Fe-Bアモルファス合金におけるCu添加の影響. 日本金属学会秋季大会. 2007
  9. CHEN, Yimeng, OHKUBO, Tadakatsu, HONO, Kazuhiro. PdNiPおよびZrAlNiPdバルク金属ガラス(BMG)のせん断帯組織解析. 日本金属学会秋季大会. 2007
  10. OHKUBO, Tadakatsu, LI, Wanfeng, HONO, Kazuhiro, T. Akiya, H. Kato. Nd-Fe-B系焼結磁石におけるCu添加の影響. 2007年日本金属学会秋期大会. 2007
  11. OHKUBO, Tadakatsu, LI, Wanfeng, HONO, Kazuhiro, M. Sagawa. 微細粒Nd-Fe-B焼結磁石のマルチスケール組織解. 第31回日本応用磁気学会学術講演会. 2007
  12. OHKUBO, Tadakatsu, OISHI, Keiichiro, KINNO, Teruyuki, Isabelle, MARTIN, B. Deconihout, HONO, Kazuhiro. Nanostructure analysis by laser assisted 3D atom probe. Microscopy & Microanalysis 2007. 2007
  13. HONO, Kazuhiro, OHKUBO, Tadakatsu. Phase separation and nanocrystallization of bulk-forming metallic glasses. International Workshop on Nanoscale Order in Amorphous and Parti. 2007
  14. MONDAL, Kallol, Golden, Kumar, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. バルク金属ガラスのナノ組織と変形能. 粉体粉末冶金協会平成19年度春季大会 . 2007
  15. OHKUBO, Tadakatsu, OISHI, Keiichiro, KINNO, Teruyuki, HONO, Kazuhiro. レーザー補助3次元アトムプローブによるナノ組織解析. 日本顕微鏡学会第63回学術講演会. 2007
  16. HONO, Kazuhiro, OHKUBO, Tadakatsu, KINNO, Teruyuki. レーザ補助3次元アトムプローブによる半導体解析の可能性. 日本顕微鏡学会第63回学術講演会. 2007
  17. FUJII, Katsuhiko, HUKUYA, KOUJI, OHKUBO, Tadakatsu, HONO, Kazuhiro. 高dpaイオン照射された低合金鋼のミクロ組織変化. 日本原子力学会2007年春の年会. 2007
  18. MONDAL, Kallol, Golden, Kumar, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. Nanocrystallization and large compressive strain of metallic glasses. 日本金属学会 2007年春期(第140回)大会. 2007
  19. Golden, Kumar, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. Structure of shear bands and plasticity of Zr-Cu-Al bulk metallic glasses. JIM Spring 2007. 2007
  20. OHKUBO, Tadakatsu, HONO, Kazuhiro, M. Uehara, S. Hirosawa. 多層Nd-Fe-B/Ta垂直磁化薄膜の磁気特性とナノ組織. 日本金属学会2007年春期講演大会. 2007
  21. SASAKI, Taisuke, OISHI, Keiichiro, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. Microstructure and Hardness of Mg-Sn-Zn Alloys with Various Heat Treatments. 2007 TMS Annual Meeting & Exhibition . 2007
  22. BUHA, Joka, OHKUBO, Tadakatsu. TMS Annual Meeting. TMS Annual Meeting, Magnesium Technology . 2007
  23. FUJII, Katsuhiko, HUKUYA, KOUJI, OHKUBO, Tadakatsu, HONO, Kazuhiro. 高dpaイオン照射した低合金鋼のミクロ組織. 軽水炉材料研究会. 2007
  24. OHKUBO, Tadakatsu, HONO, Kazuhiro, Y. Nagai, M. Hasegawa, FUJII, Katsuhiko, HUKUYA, KOUJI. レーザー補助3DAPによる原子炉材料のナノ組織解析. 軽水炉材料研究会. 2007
2006
  1. MUKAI, Toshiji, Yoshihiko Yokoyama, OHKUBO, Tadakatsu, HONO, Kazuhiro, Akihisa Inoue. ZrCuAlバルク金属ガラスのせん断帯形成に及ぼすひずみ速度の影響. 第50回日本学術会議材料工学連合講演会. 2006
  2. OHKUBO, Tadakatsu, HONO, Kazuhiro. 3DAP/TEMによる金属材料のナノ組織解析. PSA-06. 2006
  3. OHKUBO, Tadakatsu, NAGAHAMA, Daisuke, MUKAI, Toshiji, HONO, Kazuhiro. Nanostructure and mechanical properties of bulk metallic glass. The 5th International Conference on Bulk Metallic Glasses. 2006
  4. K. Fujii, K. Fukuya, OHKUBO, Tadakatsu, HONO, Kazuhiro. 高dpaイオン照射した低合金鋼中の析出挙動. 日本金属学会2006年秋季大会 . 2006
  5. Golden, Kumar, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. Controlling shear bands by preparation and heat treatment of BMGs. Japan Institute of Metals Fall Meeting 2006. 2006
  6. Y. Nagai, T. Toyama, M. Hasegawa, Y. Nishiyama, M. Suzuki, A. Almazouzi, E. van Walle, R. Gerard, OHKUBO, Tadakatsu, HONO, Kazuhiro. 陽電子消滅法と3次元アトムプローブ法による実機監視試験片の解析. 日本金属学会2006年秋季大会 . 2006
  7. SASAKI, Taisuke, OISHI, Keiichiro, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. Mg-Sn-Zn 合金における予備時効と加工の影響. 日本金属学会2006年秋季大会. 2006
  8. MONDAL, Kallol, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. Ageing response in a new Zr-based bulk metallic glass with improved mechanical property. Japan Institute of Metals; Fall Meeting. 2006
  9. OHKUBO, Tadakatsu, Isabelle, MARTIN, F. Vurpillot, B. Deconihout, HONO, Kazuhiro. Nanoscale characterization by laser assisted 3D atom probe. The 16th International Microscopy Congress. 2006
  10. OHKUBO, Tadakatsu, HONO, Kazuhiro. 3DAP/TEMによるナノ組織解析技術. 第12回LSI配線における原子輸送・応力問題研究会. 2006
  11. SASAKI, Taisuke, OISHI, Keiichiro, OHKUBO, Tadakatsu, HONO, Kazuhiro. Mg-Sn-Zn合金の時効析出挙動. 軽金属学会第110回春期大会. 2006
  12. TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, HONO, Kazuhiro. MICROSTRUCTURE AND MAGNETIC PROPERTIES OF SmCo5 FILM . IEEE International Magnetics Conference. 2006
  13. SASAKI, Taisuke, OISHI, Keiichiro, OHKUBO, Tadakatsu, HONO, Kazuhiro. Mg-Sn合金の時効析出挙動に及ぼすZnの影響. 日本金属学会2006年度春期大会. 2006
  14. NAGAHAMA, Daisuke, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. Ti-Zr-Cu-Ni-Be金属ガラスの機械特性とナノ組織. 日本金属学会2006年度春期大会 . 2006
  15. HONO, Kazuhiro, OHKUBO, Tadakatsu. 3次元アトムプローブの現状と将来展望. 日本顕微鏡学会関東支部第30回講演会. 2006
  16. HONO, Kazuhiro, OHKUBO, Tadakatsu. 3次元アトムプローブの現状と将来展望. 日本顕微鏡学会 関東支部第30回講演会. 2006
2005
  1. OHKUBO, Tadakatsu, Isabelle, MARTIN, HONO, Kazuhiro, B. Deconihout. レーザー3次元アトムプローブによるナノ組織解析. LSIテスティングシンポジウム/2005. 2005
  2. 近藤啓悦, 根本義之, 三輪幸夫, 加治芳行, 塚田隆, 永井康介, 長谷川雅幸, OHKUBO, Tadakatsu, HONO, Kazuhiro. 3次元アトムプローブによる実機炉心シュラウド材の詳細分析. 日本金属学会2005年秋期(第137回)大会. 2005
  3. FUJII, Katsuhiko, HUKUYA, KOUJI, 永井康介, 長谷川雅幸, OHKUBO, Tadakatsu, HONO, Kazuhiro, 義家敏正. 中性子照射したA533B鋼のCuリッチ析出物. 日本金属学会2005年秋期(第137回)大会. 2005
  4. OHKUBO, Tadakatsu, Isabelle, MARTIN, HONO, Kazuhiro, 西村昭彦, 峰原英介, 塚田隆, B. Deconihout. フェムト秒レーザー3次元アトムプローブの試作. 日本金属学会2005年秋期(第137回)大会. 2005
  5. 外山健, 永井康介, 畠山賢彦, 唐政, 長谷川雅幸, A. Almazouzi, E. van Walle, OHKUBO, Tadakatsu, HONO, Kazuhiro. 原子炉圧力容器鋼実機サーベイランス試験片中のCu析出物:陽電子消滅および3次元アトムプローブ. 日本金属学会2005年秋期(第137回)大会. 2005
  6. Isabelle, MARTIN, Jun, Cheol OH, OHKUBO, Tadakatsu, Y.C. Kim, E. Fleury, HONO, Kazuhiro. Phase separation in Cu43Zr43Al7Ag7 bulk metallic glass. The Japan Institute of Metals (JIM). 2005
  7. 永井康介, 外山健, 長谷川雅幸, OHKUBO, Tadakatsu, HONO, Kazuhiro. 陽電子消滅と3次元アトムプローブによるFe-Cu-X (X=Mn, Ni, P) モデル合金中のCuクラスター解析. 日本金属学会2005年秋期(第137回)大会. 2005
  8. Golden, Kumar, OHNUMA, Masato, NAGAHAMA, Daisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. Origin of two glass transition-like feature in amorphous Zr36Ti24Be40 alloy. The 12th International Conference on Rapidly Queched & Metastabl. 2005
  9. OHKUBO, Tadakatsu, NAGAHAMA, Daisuke, T. Miyoshi, S. Hirosawa, HONO, Kazuhiro. Effects of C and Ti additions on the microstructure of Nd-Fe-B nanocomposite magnets. The 12th International Conference on Rapidly Queched & Metastabl. 2005
  10. Isabelle, MARTIN, OHKUBO, Tadakatsu, Bernard Deconihout, HONO, Kazuhiro. Influence of oxygen on the crystallization behaviour of Zr41.2Ti13.8Cu12.5Ni10.0Be22.5 metallic glass. Rapidly Quenched and Metastable Materials. 2005
  11. Kundig, A. ANDREAS, OHKUBO, Tadakatsu, OHNUMA, Masato, HONO, Kazuhiro. Phase Separation in Metallic Glasses. World Materials Research Institute Forum. 2005
  12. OHKUBO, Tadakatsu, HONO, Kazuhiro. TEM/3DAPによる金属ガラスのナノ組織解析. 粉体粉末冶金協会春季講演大会. 2005
  13. Kundig, A. ANDREAS, ABE, Taichi, OHKUBO, Tadakatsu, HONO, Kazuhiro. COMPARATIVE STUDY OF CRYSTALLIZATION MECHANISMS IN METALLIC GLASSES. The 4th International Conference on Bulk Metallic Glasses. 2005
  14. Jun, Cheol OH, OHKUBO, Tadakatsu, Nagai Yasuyoshi, MUKAI, Toshiji, HONO, Kazuhiro. Microstructural characterization of Mg-Ca-Zn alloy by 3DAP and positron annihilation technique. KIMM(The Korean Institute of Metals and Materials) 2005 spring m. 2005
  15. HONMA, Tomoyuki, OHKUBO, Tadakatsu, 鎌土重晴, HONO, Kazuhiro. 3DAP/TEM characterization of aging process of Mg-RE-Zn alloys. The Korean Institute of Metals and Materials 2005 Spring Meeting. 2005
  16. 永井康介, 細田裕司, 外山健, 唐政, 井上耕治, 長谷川雅幸, OHKUBO, Tadakatsu, HONO, Kazuhiro. 陽電子消滅法によるFe中Cu析出物数密度の定量評価法の開発. 日本金属学会2005年春期(第136回)大会. 2005
  17. FUJII, Katsuhiko, HUKUYA, KOUJI, 永井康介, 長谷川雅幸, OHKUBO, Tadakatsu, HONO, Kazuhiro, 義家敏正. 中性子照射による低合金鋼のミクロ組織変化. 日本原子力学会2005年春の年会. 2005
  18. 藤井克彦, 福谷耕司, 永井康介, 長谷川雅幸, OHKUBO, Tadakatsu, HONO, Kazuhiro, 義家敏正. 3次元アトムプローブおよび陽電子消滅法による中性子照射されたA533B鋼の分析. 日本金属学会2005年春期(第136回)大会. 2005
  19. OHKUBO, Tadakatsu, NAGAHAMA, Daisuke, Reza, GHOLAMIPOUR, HONO, Kazuhiro, 広沢哲. Nd-Fe-B系磁性材料の磁気特性とナノ組織. 日本金属学会2005年春期(第136回)大会. 2005
  20. Isabelle, MARTIN, OHKUBO, Tadakatsu, HONO, Kazuhiro. Influence of the oxygen on the crystallization of a Zr-Ti-Cu-Ni-Be metallic glass. The japan Institute of Metals (JIM). 2005
  21. NAGAHAMA, Daisuke, OHKUBO, Tadakatsu, 三次敏夫, 広沢哲, HONO, Kazuhiro. Nd-Pr-Fe-B(-Ti-C)急冷薄帯の磁気特性と微細構造. 2005年春期大会. 2005
  22. Kundig, A. ANDREAS, RAGHAVAN, Gopalan, OHKUBO, Tadakatsu, HONO, Kazuhiro. High coercivity in melt-spun SmCo4.7Snx alloys. JIM Spring Meeting. 2005
  23. Jun, Cheol OH, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. 3DAP characterization of nanoscale precipitates in age-hardened Mg-Ca-Zn alloy. 日本金属学会 2005年春期 (第136回) 大会. 2005
  24. 安間勇介, 二田伸康, 松井秀樹, OHKUBO, Tadakatsu, HONO, Kazuhiro. バナジウム合金中の照射誘起微細析出物に関する研究. 日本金属学会2005年春期(第136回)大会. 2005
  25. TAKAHASHI, Yukiko, KOYAMA, Toshiyuki, OHKUBO, Tadakatsu, HONO, Kazuhiro. Size Dependence of L10 Ordering in FePt Nanoparticles. TMS 2005 Annual Meeting:. 2005
  26. MUKAI, Toshiji, OHKUBO, Tadakatsu, HONO, Kazuhiro, 河村能人. Deformation mechanism of Pd-based bulk metallic glass. The 2nd KITECH-Ku Symposium on bulk metallic glass and pulsed-po. 2005
2004
  1. OHKUBO, Tadakatsu, HONO, Kazuhiro. アトムプローブ・ナノ組織解析技術. 第14回システム集積プロセス調査専門委員会. 2004
  2. Kundig, A. ANDREAS, OHNUMA, Masato, PING, De-hai, OHKUBO, Tadakatsu, HONO, Kazuhiro. Two-phase metallic glasses. International Symposium on Advanced Structural and Functional Ma. 2004
  3. TIAN, Na, OHNUMA, Masato, OHKUBO, Tadakatsu, Isabelle, MARTIN, HONO, Kazuhiro. Crystallization Behavior of Al88Gd6Er2Ni4 Metallic Glass. JIM2004年秋期大会. 2004
  4. Kundig A. ANDREAS, PING, De-hai, OHNUMA, Masato, OHKUBO, Tadakatsu, HONO, Kazuhiro. Two-phase metallic glasses. JIM Fall Meeting (Japanese Institute of Metals). 2004
  5. MUKAI, Toshiji, OHKUBO, Tadakatsu, HONO, Kazuhiro, 河村能人. Deformation mechanism of bulk metallic glass. 日本金属学会 2004年秋期大会. 2004
  6. HONMA, Tomoyuki, 鎌土重晴, PING, De-hai, OHKUBO, Tadakatsu, HONO, Kazuhiro. 3DAPによるMgGdYZnZr合金の組織と機械的特性の解析. 日本金属学会. 2004
  7. OHKUBO, Tadakatsu, S. Shoji, Y. Kawamura, HONO, Kazuhiro. Nanostructure analysis of friction welded bulk metallic glass interface. 日本金属学会2004年秋期(第134回)大会. 2004
  8. Isabelle, MARTIN, OHKUBO, Tadakatsu, OHNUMA, Masato, HONO, Kazuhiro. Influence of the oxygen on the crystallization of a Zr-Ti-Cu-Ni-Be metallic glass. The Japan Institute of Metals (JIM). 2004
  9. 竹原博樹, 井野博満, OHKUBO, Tadakatsu, HONO, Kazuhiro. ナノコンポジット磁石におけるZr,Cの挙動と磁気特性に及ぼす効果. 日本金属学会2004年秋期(第134回)大会. 2004
  10. ABE, NOBUO, Kundig A. ANDREAS, OHNUMA, Masato, OHKUBO, Tadakatsu, HONO, Kazuhiro. FePtP合金の組織と磁気特性. 第28回日本応用磁気学会学術講演会. 2004
  11. HONMA, Tomoyuki, 鎌土重晴, PING, De-hai, OHKUBO, Tadakatsu, HONO, Kazuhiro. TEM/3DAP studies on the microstructure of aged Mg-RE-Zr-(Zn) alloys. Internatinal Conference on Magnesium -Science, Technology and Ap. 2004
  12. RAGHAVAN, Gopalan, OHKUBO, Tadakatsu, HONO, Kazuhiro. Nanoscale microstructure and its effect on coercivity in melt-spun Sm(Co0.74Fe0.1Cu0.12Zr0.04B0.015)7.4 ribbons. 28th Annual Conference on Magnetics in Japan. 2004
  13. OHKUBO, Tadakatsu, Isabelle, MARTIN, NAGAHAMA, Daisuke, OHNUMA, Masato, HONO, Kazuhiro. Early crystallization of Zr- and Cu-based bulk metallic glasses. ISMANAM 2004. 2004
  14. TIAN, Na, OHNUMA, Masato, OHKUBO, Tadakatsu, Isabelle, MARTIN, HONO, Kazuhiro. Glass Transition and Crystallization Behavior of Al88Gd6Er2Ni4 Metallic Glass. 11th International Symposium on Metastable, 2004. 2004
  15. Kundig, A. ANDREAS, OHNUMA, Masato, PING, De-hai, OHKUBO, Tadakatsu, HONO, Kazuhiro. Two-phase metallic glasses. ISMANAM 2004. 2004
  16. NAGAHAMA, Daisuke, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. Microstructure and Mechanical Properties of Cu60Zr30Ti10 Alloy. ISMANAM2004. 2004
  17. TAKAHASHI, Yukiko, KOYAMA, Toshiyuki, OHNUMA, Masato, OHKUBO, Tadakatsu, HONO, Kazuhiro. The effect of the interface on the ordering of FePt nanosized particles. L10 Ordered Intermetallic and Related Phases for Permanent for M. 2004
  18. HONO, Kazuhiro, TAKAHASHI, Yukiko, OHNUMA, Masato, ABE, NOBUO, Kundig A. ANDREAS, OHKUBO, Tadakatsu. Microstructure and properties of various forms of FePt hard magnetic alloys. ECI Conference on L10 Ordered Intermetallic and Related Phases. 2004
  19. Kundig A. ANDREAS, OHNUMA, Masato, PING, De-hai, OHKUBO, Tadakatsu, HONO, Kazuhiro. Microstructure of an as quenched two-phase metallic glass. Liquid and Amorphous Metals, LAM 12. 2004
  20. Isabelle, MARTIN, OHKUBO, Tadakatsu, HONO, Kazuhiro. Primary crystallization in Zr-Ti-Cu-Ni-Be metallic glass. Liquid and amorphous metals LAM12. 2004
  21. OHKUBO, Tadakatsu, XIANGYUAN, XIONG, HONMA, Tomoyuki, PING, De-hai, HONO, Kazuhiro. 3DAP characterization of metallic materials. 49th International Field Emission Symposium (IFES 04). 2004
  22. NAGAHAMA, Daisuke, OHKUBO, Tadakatsu, MUKAI, Toshiji, HONO, Kazuhiro. Cu60Zr30Ti10アモルファス合金のナノ組織と力学特性. 2004年日本金属学会春季大会. 2004
  23. OHKUBO, Tadakatsu, HONO, Kazuhiro, 庄司卓央, 河村能人. Pd-Ni-P/Pd-Cu-Ni-P金属ガラス摩擦接合界面のナノ組織解析. 日本金属学会2004年春期大会. 2004
  24. 永井康介, 外山健, 唐政, 長谷川雅幸, 西山裕孝, 鈴木雅秀, OHKUBO, Tadakatsu, HONO, Kazuhiro. 原子炉圧力容器鋼サーベイランス試験片中のCu析出物の検出-陽電子消滅法と3次元アトムプローブ-. 2004年日本金属学会春季大会. 2004
  25. Kundig A. ANDREAS, ABE, NOBUO, OHNUMA, Masato, OHKUBO, Tadakatsu, HONO, Kazuhiro. Magnetic properties and microstructure of rapidly quenched and annealed FePtP alloys. JIM Spring Meeting 2004. 2004
  26. 外山健, 永井康介, 唐政, 長谷川雅幸, OHKUBO, Tadakatsu, HONO, Kazuhiro. 陽電子消滅2次元角相関によるFe-Cuモデル合金中のCu析出物の寸法及び組成の研究. 2004年日本金属学会春季大会. 2004
  27. TAKAHASHI, Yukiko, KOYAMA, Toshiyuki, OHNUMA, Masato, OHKUBO, Tadakatsu, HONO, Kazuhiro. Size dependence of ordering in FePt nano particles. 9th Joint MMM-Intermag Conference. 2004

特許 TSV

登録特許
  1. 特許第6365901号 磁気抵抗素子及び磁気記憶装置 (2018)
  2. 特許第6358572号 希土類磁石の製造方法 (2018)
  3. 特許第6288658号 垂直磁化膜用下地、垂直磁化膜構造、垂直MTJ素子及びこれらを用いた垂直磁気記録媒体 (2018)
  4. 特許第6257030号 Mg合金とその製造方法 (2017)
  5. 特許第5988019号 強磁性トンネル接合体とそれを用いた磁気抵抗効果素子並びにスピントロニクスデバイス (2016)
  6. 特許第5856953号 希土類永久磁石の製造方法および希土類永久磁石 (2015)
  7. 特許第5419061号 マグネシウム合金 (2013)
  8. 特許第5419062号 マグネシウム合金 (2013)
  9. 特許第5062754号 FePtP3元合金 (2012)
公開特許
  1. 特開2017005243号 垂直磁化膜と垂直磁化膜構造並びに磁気抵抗素子および垂直磁気記録媒体 (2017)
  2. 特開2016115777号 希土類磁石及びその製造方法 (2016)
  3. 特開2006029786号 析出強化型高強度鋼の強化評価方法 (2006)
  4. 特開2005272985号 FePtPバルク合金 (2005)
  5. 特開2005220406号 2相金属ガラス (2005)
外国特許
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  6. No. CN102918611A Method for producing rare earth permanent magnets, and rare earth permanent magnets (2013)
  7. No. WO2011145674A1 METHOD FOR PRODUCING RARE EARTH PERMANENT MAGNETS, AND RARE EARTH PERMANENT MAGNETS (2011)

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