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セペリ アミン ホセイン
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. X.D. Xu, Z.J. Dong, T.T. Sasaki, Xin Tang, H. Sepehri-Amin, T. Ohkubo, K. Hono. Influence of Ti addition on microstructure and magnetic properties of a heavy-rare-earth-free Nd-Fe-B sintered magnet. Journal of Alloys and Compounds. 806 (2019) 1267-1275 10.1016/j.jallcom.2019.07.289
  2. 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. 114 [17] (2019) 172402 10.1063/1.5092269
  3. H. Sepehri-Amin, W. Zhou, S. Bosu, C. Abert, Y. Sakuraba, S. Kasai, D. Suess, K. Hono. Design of spin-injection-layer in all-in-plane spin-torque-oscillator for microwave assisted magnetic recording. Journal of Magnetism and Magnetic Materials. 476 (2019) 361-370 10.1016/j.jmmm.2018.12.081
  4. J. Wang, H. Sepehri-Amin, H. Tajiri, T. Nakamura, K. Masuda, Y.K. Takahashi, T. Ina, T. Uruga, I. Suzuki, Y. Miura, K. Hono. Impact of carbon segregant on microstructure and magnetic properties of FePt-C nanogranular films on MgO (001) substrate. Acta Materialia. 166 (2019) 413-423 10.1016/j.actamat.2019.01.001
  5. 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
  6. 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
  7. 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
2018
  1. 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
  2. H. Sepehri-Amin, Miho Nagano, T. Seki, H. Ho, D. Tripathy, S. Pirzada, K. Srinivasan, H. Yuan, P. Dorsey, A. Ajan, K. Hono. Microstructure and magnetic properties of FePt-(C,SiO2) granular films deposited on MgO, MgTiO, and MgTiON underlayers. Scripta Materialia. 157 (2018) 1-5 10.1016/j.scriptamat.2018.07.025
  3. T. Shiroyama, Y. Sakuraba, T. Nakatani, H. Sepehri-Amin, J. W. Jung, K. Hono. High magnetic field sensitivity in anti-ferromagnetically coupled 001-epitaxial [Co2Fe(Al0.5Si0.5)/Ag]N multilayers. Journal of Applied Physics. 124 [16] (2018) 163910 10.1063/1.5048931
  4. 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
  5. 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
  6. 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
  7. K. Hono, H. Sepehri-Amin. Prospect for HRE-free high coercivity Nd-Fe-B permanent magnets. Scripta Materialia. 151 (2018) 6-13 10.1016/j.scriptamat.2018.03.012
  8. P. Tozman, H. Sepehri-Amin, Y.K. Takahashi, S. Hirosawa, K. Hono. Intrinsic magnetic properties of Sm(Fe 1-x Co x ) 11 Ti and Zr-substituted Sm 1-y Zr y (Fe 0.8 Co 0.2 ) 11.5 Ti 0.5 compounds with ThMn 12 structure toward the development of permanent magnets. Acta Materialia. 153 (2018) 354-363 10.1016/j.actamat.2018.05.008
  9. 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
  10. Claas Abert, Hossein Sepehri-Amin, Florian Bruckner, Christoph Vogler, Masamitsu Hayashi, Dieter Suess. Back-Hopping in Spin-Transfer-Torque Devices: Possible Origin and Countermeasures. Physical Review Applied. 9 [5] (2018) 10.1103/physrevapplied.9.054010
  11. 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
  12. 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
  13. 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
  14. 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
2017
  1. Masaki Furuta, Yang Liu, Hossein Sepehri-Amin, Kazuhiro Hono, Jian-Gang (Jimmy) Zhu. Annealing effect on current-driven domain wall motion in Pt/[Co/Ni] wire. Journal of Applied Physics. 122 [11] (2017) 113901 10.1063/1.5001917
  2. Xue-Fei Miao, Hossein Sepehri-Amin, Kazuhiro Hono. Structural origin of hysteresis for hexagonal (Mn,Fe) 2 (P,Si) magneto-caloric compound. Scripta Materialia. 138 (2017) 96-99 10.1016/j.scriptamat.2017.05.043
  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. H. Sepehri-Amin, H. Iwama, G. Hrkac, K.T. Butler, T. Shima, K. Hono. Pt surface segregation in L1 0 -FePt nano-grains. Scripta Materialia. 135 (2017) 88-91 10.1016/j.scriptamat.2017.03.035
  5. D. Suess, C. Vogler, F. Bruckner, H. Sepehri-Amin, C. Abert. Significant reduction of critical currents in MRAM designs using dual free layer with perpendicular and in-plane anisotropy. Applied Physics Letters. 110 [25] (2017) 252408 10.1063/1.4987140
  6. Claas Abert, Hossein Sepehri-Amin, Florian Bruckner, Christoph Vogler, Masamitsu Hayashi, Dieter Suess. Fieldlike and Dampinglike Spin-Transfer Torque in Magnetic Multilayers. Physical Review Applied. 7 [5] (2017) 10.1103/physrevapplied.7.054007
  7. S. Bosu, H. Sepehri-Amin, Y. Sakuraba, S. Kasai, M. Hayashi, K. Hono. High frequency out-of-plane oscillation with large cone angle in mag-flip spin torque oscillators for microwave assisted magnetic recording. Applied Physics Letters. 110 [14] (2017) 142403 10.1063/1.4979324
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. J. Wang, H. Sepehri-Amin, Y.K. Takahashi, S. Okamoto, S. Kasai, J.Y. Kim, T. Schrefl, K. Hono. Magnetization reversal of FePt based exchange coupled composite media. Acta Materialia. 111 (2016) 47-55 10.1016/j.actamat.2016.03.001
  7. 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
  8. W.B. Cui, L. Ma, H. Sepehri-Amin, Y.K. Takahashi, K. Hono. The influence of grain morphology and easy axis orientation on the coercivity of Sm(Co0.9Cu0.1)5 thin films. Acta Materialia. 107 (2016) 49-58 10.1016/j.actamat.2016.01.030
  9. 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
  10. S. Bosu, H. Sepehri-Amin, Y. Sakuraba, M. Hayashi, C. Abert, D. Suess, T. Schrefl, K. Hono. Reduction of critical current density for out-of-plane mode oscillation in a mag-flip spin torque oscillator using highly spin-polarized Co2Fe(Ga0.5Ge0.5) spin injection layer. Applied Physics Letters. 108 [7] (2016) 072403 10.1063/1.4942373
  11. H. Pandey, J. Wang, T. Shiroyama, B. S. D. Ch. S. Varaprasad, H. Sepehri-Amin, Y. K. Takahashi, A. Perumal, K. Hono. Structure Optimization of FePt–C Nanogranular Films for Heat-Assisted Magnetic Recording Media. IEEE Transactions on Magnetics. 52 [2] (2016) 1-8
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. 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
  3. J. Wang, S. Hata, Y.K. Takahashi, H. Sepehri-Amin, B.S.D.Ch.S. Varaprasad, T. Shiroyama, T. Schrefl, K. Hono. Effect of MgO underlayer misorientation on the texture and magnetic property of FePt–C granular film. Acta Materialia. 91 (2015) 41-49 10.1016/j.actamat.2015.03.007
  4. 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
  5. 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
  6. W.B. Cui, H. Sepehri-Amin, Y.K. Takahashi, K. Hono. Hard magnetic properties of spacer-layer-tuned NdFeB/Ta/Fe nanocomposite films. Acta Materialia. 84 (2015) 405-412 10.1016/j.actamat.2014.10.008
  7. 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
2013
  1. 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
  2. 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
  3. N.M. Dempsey, T.G. Woodcock, H. Sepehri-Amin, Y. Zhang, H. Kennedy, D. Givord, K. Hono, O. Gutfleisch. High-coercivity Nd–Fe–B thick films without heavy rare earth additions. Acta Materialia. 61 [13] (2013) 4920-4927 10.1016/j.actamat.2013.04.055
  4. 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
  5. 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
  6. 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
  7. Jone Zabaleta, Sergio Valencia, Florian Kronast, César Moreno, Patricia Abellán, Jaume Gázquez, H. Sepehri-Amin, Felip Sandiumenge, Teresa Puig, Narcís Mestres, Xavier Obradors. Photoemission electron microscopy study of sub-200 nm self-assembled La0.7Sr0.3MnO3 epitaxial islands. Nanoscale. 5 [7] (2013) 2990 10.1039/c3nr33346a
  8. 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. W.F. Li, H. Sepehri-Amin, L.Y. Zheng, B.Z. Cui, A.M. Gabay, K. Hono, W.J. Huang, C. Ni, G.C. Hadjipanayis. Effect of ball-milling surfactants on the interface chemistry in hot-compacted SmCo5 magnets. Acta Materialia. 60 [19] (2012) 6685-6691 10.1016/j.actamat.2012.08.038
  2. K. Hono, H. Sepehri-Amin. Strategy for high-coercivity Nd–Fe–B magnets. Scripta Materialia. 67 [6] (2012) 530-535 10.1016/j.scriptamat.2012.06.038
  3. D. Prabhu, H. Sepehri-Amin, C.L. Mendis, T. Ohkubo, K. Hono, S. Sugimoto. Enhanced coercivity of spark plasma sintered Zn-bonded Sm–Fe–N magnets. Scripta Materialia. 67 [2] (2012) 153-156 10.1016/j.scriptamat.2012.04.001
  4. Konrad Löwe, Jian Liu, Konstantin Skokov, James D. Moore, Hossein Sepehri-Amin, Kazuhiro Hono, Matthias Katter, Oliver Gutfleisch. The effect of the thermal decomposition reaction on the mechanical and magnetocaloric properties of La(Fe,Si,Co)13. Acta Materialia. 60 [10] (2012) 4268-4276 10.1016/j.actamat.2012.04.027
  5. 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
  6. 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

口頭発表 TSV

2018
  1. 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
  2. トズマン カラニコラス ペリン, 高橋 有紀子, セペリ アミン ホセイン, 小川 大介, 廣澤 哲, 宝野 和博. The effects of Zr on intrinsic properties of (Sm1-xZrx)(Fe0.8Co0.2)12 compound with ThMn12 structure. 2018年日本金属学会秋期講演大会. 2018
  3. ディルバ イマンツ, セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. 超精密SmFe12系磁石のHDDR法による開発. JIM Autumn Meeting 2018. 2018
  4. 李 江南, リユウ リフア, セペリ アミン ホセイン, タン シン, 佐久間紀次, 庄司哲也, 加藤晃, SCHREFL Thomas, 宝野 和博. Coercivity and its thermal stability of Nd-Fe-B hot-deformed magnets enhanced by the eutectic grain boundary diffusion process. 日本金属学会第163回秋期講演大会. 2018
  5. 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
  6. セペリ アミン ホセイン, 周 偉男, ボス スボロジャテイ, 桜庭 裕弥, 葛西 伸哉, 宝野 和博. Design and development of all-in-plane spin-torque-oscillator for microwave assisted magnetic recording. The 42nd annual conference on magnetics in Japan. 2018
  7. 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
  8. 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
  9. 葛西 伸哉, 向山 広記, セペリ アミン ホセイン, 大久保 忠勝, 三谷 誠司, 宝野 和博. 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
  10. WANG, Jian, SEPEHRI AMIN, Hossein, MASUDA, Keisuke, TAKAHASHI, Yukiko, Hiroo Tajiri, Tetsuya Nakamura, Toshiaki Ina, Tomoya Uruga, MIURA, Yoshio, HONO, Kazuhiro. Origin of in-plane component for L10-FePt nanogranular films deposited on MgO single crystal substrate. IcAUMS 2018. 2018
  11. 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
  12. TOZMAN KARANIKOLAS, Pelin, SEPEHRI AMIN, Hossein, TAKAHASHI, Yukiko, HIROSAWA, Satoshi, HONO, Kazuhiro. Intrinsic magnetic properties of Sm(Fe1-xCox)11Ti and Zr-substituted Sm1-yZry(Fe0.8Co0.2)11.5Ti0.5 compounds with ThMn12 structure toward the development of permanent magnets. Intermag2018. 2018
  13. ZHOU, Weinan, SEPEHRI AMIN, Hossein, SAKURABA, Yuya, KASAI, Shinya, BOSU, Subrojati, HONO, Kazuhiro. Spin torque oscillator with in-plane magnetized spin-injection layer for microwave assisted magnetic recording. Intermag 2018. 2018
  14. SEPEHRI AMIN, Hossein, C. Abert, D. Suess, HONO, Kazuhiro. Design of field generating layer in all-in-plane spin-torque-oscillator. Intermag2018. 2018
  15. 王建, SepehriAminHossein, 高橋有紀子, 田尻 寛男, 中村 哲也, 伊奈稔哲, 宇留賀 朋哉 SPring-8, 宝野和博. Origin of in-plane component for L10-FePt nanogranular films deposited on MgO single crystal substrate. 2018年第65回応用物理学会春季学術講演会. 2018
  16. WANG, Jian, SEPEHRI AMIN, Hossein, TAKAHASHI, Yukiko, Hiroo Tajiri, Tetsuya Nakamura, Ina Toshiaki, Tomoya Uruga, HONO, Kazuhiro. Origin of in-plane component for L10-FePt nanogranular films deposited on MgO single crystal substrate. 2018年第65回応用物理学会春季学術講演会. 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. 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
  3. 桜庭 裕弥, セペリ アミン ホセイン, 葛西 伸哉, 宝野 和博. マイクロ波アシスト磁化反転を目指したスピントルク発振素子. 日本磁気学会学術講演会. 2017
  4. 宝野 和博, セペリ アミン ホセイン, 佐々木 泰祐, 大久保 忠勝. 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
  5. セペリ アミン ホセイン, ミャオ スーフェイ, 大久保 忠勝, 宝野 和博. Microstructural origin of hysteresis in Ni-Mn-In based magnetocaloric compounds. The Japan Institute of Metals and Materials, 2017 Fall meeting. 2017
  6. リユウ リフア, セペリ アミン ホセイン, 佐々木 泰祐, 大久保 忠勝, 矢野 正雄, 佐久間 紀次, 加藤 晃, 庄司 哲也, 宝野 和博. 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
  7. 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
  8. SEPEHRI AMIN, Hossein, BOSU, Subrojati, C. Abert, SAKURABA, Yuya, KASAI, Shinya, HAYASHI, Masamitsu, D. Suess, HONO, Kazuhiro. Design and development of spin-torque-oscillator for microwave assisted magnetic recording. TMRC 2017,The 28th Magnetic Recording Conference. 2017
  9. WANG, Jian, SEPEHRI AMIN, Hossein, TAKAHASHI, Yukiko, HONO, Kazuhiro. Origin of in-plane component for L10-FePt granular films deposited on MgO single crystal substrate. The 28th Magnetic Recording Conference (TMRC 2017). 2017
  10. セペリ アミン ホセイン, パク パムソク, タン シン, 大久保 忠勝, 宝野 和博. 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
  11. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Dy-free high coercivity Nd-Fe-B permanent magnets. The 4th NIMS-Taiwan MOST workshop. 2017
  12. 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
  13. セペリ アミン ホセイン, マルコ ソダーツニク, 佐々木 泰祐, J. Fischbacher, 大久保 忠勝, Y. Takada, T. Sato, Y. Kaneko, A. Kato, T. Schrefl, 宝野 和博. Dynamic observation of magnetization reversals in Nd-Fe-B sintered magnets. Japan Institute of Metals and Materials. 2017
  14. OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. Microstructure and magnetic property of NdFeB magnet. CDMSI International Workshop. 2017
2016
  1. 高橋 有紀子, 王 建, セペリ アミン ホセイン, 宝野 和博. Development of FePt Based HAMR Media. winter review meeting. 2016
  2. SEPEHRI AMIN, Hossein, H. Iwama, G. Hrkac, T. Shima, HONO, Kazuhiro. Surface Segregation of Pt in L10-FePt Nano-grains. 61st Annual Conference on Magnetism and Magnetic Materials. 2016
  3. WANG, Jian, TAKAHASHI, Yukiko, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. Effect of substrate surface roughness on the texture and magnetic property of FePt-C granular film. 61st Annual Conference on Magnetism and Magnetic Materials. 2016
  4. WANG, Jian, TAKAHASHI, Yukiko, Kay YAKUSHIJI , SEPEHRI AMIN, Hossein, Kubota, Hitoshi, HONO, Kazuhiro. Effect of CrB insertion on the (001) texture of MgO seed layer and magnetic properties of FePt-C HAMR media . 61st Annual Conference on Magnetism and Magnetic Materials . 2016
  5. SEPEHRI AMIN, Hossein, BOSU, Subrojati, SAKURABA, Yuya, HAYASHI, Masamitsu, T. Schrefl, C. Abert, D. Suess, HONO, Kazuhiro. Reduction of Critical Current Density in Spin-Torque-Oscillator Device for Microwave Assisted Magnetic Recording . 61st Annual Conference on Magnetism and Magnetic Materials. 2016
  6. WANG, Jian, SEPEHRI AMIN, Hossein, TAKAHASHI, Yukiko, HONO, Kazuhiro. Development of FePt Based HAMR Media. ASTC review meeting. 2016
  7. SAKURABA, Yuya, BOSU, Subrojati, SEPEHRI AMIN, Hossein, HAYASHI, Masamitsu, KASAI, Shinya, HONO, Kazuhiro. Development of a spin torque oscillator with highly spin-polarized spin injector for MAMR. ASTC Fall 2016 Research Review Meeting. 2016
  8. 王 建, 高橋 有紀子, 薬師寺啓, セペリ アミン ホセイン, 久保田 均, 宝野 和博. Effect of CrB insertion on the (001) texture of MgO seed layer and magnetic properties of FePt-C HAMR media. 日本金属学会2016年秋期講演大会. 2016
  9. タン シン, セペリ アミン ホセイン, 大久保 忠勝, K. Hioki, A. Hattori , 宝野 和博. Coercivity enhancement in hot-deformed magnets processed from amorphous precursors. The 40th annual conference on magnetics in Japan. 2016
  10. 王 建, 高橋 有紀子, 薬師寺啓, セペリ アミン ホセイン, 久保田 均, 宝野 和博. Effect of CrB insertion on the (001) texture of MgO seed layer and magnetic properties of FePt-C HAMR media . 第40回 日本磁気学会学術講演会. 2016
  11. セペリ アミン ホセイン, H. Iwama, T. Shima, 宝野 和博. Surface segregation of Pt in L10-FePt nano-grains. The 40th Annual Conference on Magnetics in Japan. 2016
  12. リユウ リフア, セペリ アミン ホセイン, 佐々木 泰祐, 矢野 正雄, 佐久間 紀次, 庄司 哲也, 加藤 晃, 大久保 忠勝, 宝野 和博. 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
  13. セペリ アミン ホセイン, J. Thielsch, 大久保 忠勝, J. Fischbacher, T. Schrefl, O. Gutfleisch, 宝野 和博. 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
  14. 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
  15. 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
  16. TAKAHASHI, Yukiko, WANG, Jian, PANDEY, Himanshu, ALAGARSAMY, Perumal, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. FePt-C granular film for heat assisted magnetic recording. 2016 International Conference of Asian Union of Magnetic Society. 2016
  17. 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
  18. セペリ アミン ホセイン. Micromagnetic simulation and experimental investigations on anisotropic nanocomposite permanent magnets. 147th Committee on Amorphous and Nano-crystalline Materials. 2016
  19. LIU, Jun, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Multiscale characterizations on hot-deformed Nd-Fe-B magnets. APT&M 2016. 2016
  20. 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
  21. 蓬田 貴裕, 岡本 聡, 菊池 伸明, 北上 修, セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博, 秋屋 貴博, 日置 敬子, 服部 篤. 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
  22. 岡本 聡, 後藤 龍太, 蓬田 貴裕, 菊池 伸明, 北上 修, セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博, 秋屋 貴博, 日置 敬子, 服部 篤. 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
  23. 日置 敬子, 秋屋 貴博, 森田 敏之, 服部 篤, セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. 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
  24. ボス スボロジャテイ, セペリ アミン ホセイン, 桜庭 裕弥, 葛西 伸哉, 林 将光, 宝野 和博. Mag-flip spin torque oscillator using highly spin polarized Heusler alloy as spin injection layer for microwave assisted magnetic recording. The 63rd Japan Society of Applied Physics(JSAP) Spring meeting. 2016
  25. HONO, Kazuhiro, SASAKI, Taisuke, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu. Dy-free high coercivity Nd-Fe-B permanent magnets. TMS2016 145th Annual Meeting & Exhibition. 2016
2015
  1. ボス スボロジャテイ, セペリ アミン ホセイン, 桜庭 裕弥, 林 将光, 葛西 伸哉, 宝野 和博. マグフリップ型スピントルク発振素子のための高スピン偏極・高Ku材料の探索. ASRC, MAMR部会 成果報告会. 2015
  2. 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
  3. 大久保 忠勝, 佐々木 泰祐, セペリ アミン ホセイン, リュウ ジュン, 秋屋 貴博, 古賀 翔多, 及川 亨, 宝野 和博. 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
  4. セペリ アミン ホセイン. Enhancement of coercivity and thermal stability of coercivity in anisotropic hot-deformed Nd-Fe-B magnets. Japan Institute of Metals. 2015
  5. セペリ アミン ホセイン, ボス スボロジャテイ, 桜庭 裕弥, T. Schrefl, C. Abert, D. Suess, 宝野 和博. Microstructure design of Spin-Torque-Oscillator for microwave assisted magnetic recording applications using micromagnetic simulation. The Japan Society of Applied Physics. 2015
  6. シーラム ウマ マヘスワラ ラオ, L. Lihua, 秋屋 貴博, セペリ アミン ホセイン, 大久保 忠勝, M. Yano, N. Sakuma, A. Manabe, A. Kato, 宝野 和博. 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
  7. セペリ アミン ホセイン, 大久保 忠勝, Y. Kaneko, Y. Takada, A. Kato, 宝野 和博. 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
  8. PANDEYHimanshu, 王建, 城山泰祐, VARAPRASADBollapragada, SepehriAminHossein, 高橋有紀子, PerumalAragarsamy, 宝野和博. Structural optimization of FePt-C nano granular films for HAMR recording. The 26th Magnetic Recording Conference (TMRC2015). 2015
  9. セペリ アミン ホセイン, 秋屋 貴博, リュウ ジュン, 大久保 忠勝, 宝野 和博. 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
  10. 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
  11. 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
  12. ボス スボロジャテイ, セペリ アミン ホセイン, 桜庭 裕弥, 林 将光, 宝野 和博. マグフリップ型スピントルク発振素子のための高スピン偏極・高Ku材料の探索. SRC MAMR部会 H26-27年最終成果報告会. 2015
  13. 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
  14. 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
  15. 王 建, 波多 聰, 高橋 有紀子, セペリ アミン ホセイン, ボラプラガダ バラプラサド, 城山 泰祐, 宝野 和博. Effect of MgO seed layer misorientation on the texture and magnetic property of FePt-C granular film. 2015 Annual Spring Meeting (Japan Institute of Metal and Materia. 2015
  16. 宝野 和博, 大久保 忠勝, セペリ アミン ホセイン, 秋屋 貴博. 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
  17. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. 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
  18. ボス スボロジャテイ, 桜庭 裕弥, セペリ アミン ホセイン, 林 将光, 宝野 和博. マグフリップ型スピントルク発振素子のための高スピン偏極・高Ku材料の探索. SRC MAMR部会 成果報告会. 2015
  19. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. 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
  20. 大久保 忠勝, セペリ アミン ホセイン, 佐々木 泰祐, 宝野 和博. 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. 大久保 忠勝, セペリ アミン ホセイン, 佐々木 泰祐, 宝野 和博. 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
  2. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博, K. Guth, O. Gutfleisch. Anisotropy inducement mechanism in hydrogen disproportionation desorption recombination (HDDR) processed Nd-Fe-B powders. Magnetic Society of Japan (MSJ). 2014
  3. 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
  4. 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
  5. 秋屋 貴博, セペリ アミン ホセイン, リュウ ジュン, LIU Lihua, 大久保 忠勝, 日置敬子, 服部篤, 宝野 和博. 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. 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
  7. 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
  8. 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
  9. 秋屋 貴博, リュウ ジュン, セペリ アミン ホセイン, 大久保 忠勝, 日置 敬子, 服部 篤, 宝野 和博. 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
  10. 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
  11. 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
  12. 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
  13. HONO, Kazuhiro, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu. Toward the development of Dy-free high coercivity Nd-Fe-B permanent magnets. Deutsche Physikalische Gesellschaft Frühjahrstagung. 2014
  14. 大久保 忠勝, グルーバー マリア テレサ, セペリ アミン ホセイン, 宝野 和博. 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
  15. 秋屋 貴博, L.H.Liu, リュウ ジュン, セペリ アミン ホセイン, 大久保 忠勝, 日置敬子, 服部篤, 宝野 和博. 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
  16. 大久保 忠勝, セペリ アミン ホセイン, グルーバー マリア テレサ, リュウ ジュン, 秋屋 貴博, 佐々木 泰祐, 宝野 和博. 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
2013
  1. 大久保 忠勝, セペリ アミン ホセイン, 宝野 和博. 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. 秋屋 貴博, リュウ ジュン, セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博, 日置敬子, 服部篤. 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
  3. 宝野 和博, 大久保 忠勝, セペリ アミン ホセイン. 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
  4. 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
  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. 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
  7. セペリ アミン ホセイン, 大久保 忠勝, 小塚 雅也, H. Yamamura, T. Saito, H. Iba, 宝野 和博. 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
  8. セペリ アミン ホセイン, 大久保 忠勝, 小塚 雅也, H. Yamamura, T. Saito, H. Iba, 宝野 和博. 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
  9. 宝野 和博, 大久保 忠勝, セペリ アミン ホセイン, 中村哲也, 鈴木基寛. 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
  10. 宝野 和博, セペリ アミン ホセイン, 大久保 忠勝, リュウ ジュン, 佐々木 泰祐, 秋屋 貴博. 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
  11. 大久保 忠勝, グルーバー マリア テレサ, セペリ アミン ホセイン, 宝野 和博. 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
  12. 秋屋 貴博, L. H. Liu, セペリ アミン ホセイン, 大久保 忠勝, 日置敬子, 服部篤, 宝野 和博. 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
  13. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. Finite element micromagnetic simulations of hot-deformed Nd-Fe-B magnets with directional intergranular phases. the 37th annual conference on MAGNETICS in Japan. 2013
  14. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. Finite element micromagnetic simulations of hot-deformed Nd-Fe-B magnets with directional intergranular phases. the 37th annual conference on MAGNETICS in Japan. 2013
  15. HONO, Kazuhiro, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu. Toward the development of Dy-free high coercivity Nd-Fe-B permanent magnet. PRICM-8 - 2013. 2013
  16. 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
2010
  1. 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
  2. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博, 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
  3. 大久保 忠勝, セペリ アミン ホセイン, 宝野 和博. 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
  4. 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
  5. 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
  6. 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
  7. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Microstructure and coercivity of Dy diffusion processed Nd-Fe-B sintered magnets. ISAMMA 2010. 2010
  8. 大久保 忠勝, セペリ アミン ホセイン, 西内武司, 広沢哲, 宝野 和博. 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
  9. 大久保 忠勝, セペリ アミン ホセイン, リィ ワンフェン, 宝野 和博, 西内武司, 広沢哲. 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
  10. 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. 大久保 忠勝, セペリ アミン ホセイン, 宝野 和博, 西内武司, 広沢哲. 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
  3. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博, T. Nishiuchi, S. Hirosawa. Nanostructure development of Nd-Fe-B based HDDR powder. MSJ 2009. 2009
  4. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博, 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
  5. 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
  6. 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
  7. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Effect of Ga in coercivity enhancement of Nd-Fe-B sintered magnets. EUROMAT 2009 . 2009
  8. セペリ アミン ホセイン, 宝野 和博, 大久保 忠勝, 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

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  1. 特許第6358572号 希土類磁石の製造方法 (2018)
  2. 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)
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