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NIMS Awardシンポジウム2026

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セペリ アミン ホセイン

セペリ アミン ホセイン (SEPEHRI AMIN, Hossein) 0000-0002-7856-7897

Address
305-0047 茨城県つくば市千現1-2-1 [アクセス]

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論文 TSV

2026
  1. Sang J. Park, Ravi Gautam, Takashi Yagi, Rajkumar Modak, Hossein Sepehri-Amin, Ken-ichi Uchida. Structural heterogeneity-induced enhancement of transverse magneto-thermoelectric conversion revealed by thermoelectric imaging in functionally graded materials. Science and Technology of Advanced Materials. 27 [1] (2026) 2643965 10.1080/14686996.2026.2643965 Open Access
  2. Oscar Custance, Manuel González Lastre, Kyungmin Kim, Estefanía Fernández-Villanueva, Pablo Pou, Masayuki Abe, Hossein Sepehri-Amin, Shigeki Kawai, M. Verónica Ganduglia-Pirovano, Ruben Perez. Near-surface defects break symmetry in water adsorption on CeO2−x(111). Communications Materials. 7 [1] (2026) 39 10.1038/s43246-025-01011-x Open Access
  3. Sang J. Park, Ravi Gautam, Abdulkareem Alasli, Takamasa Hirai, Fuyuki Ando, Hosei Nagano, Hossein Sepehri-Amin, Ken-ichi Uchida. High-throughput development of flexible amorphous materials showing large anomalous Nernst effect via automatic annealing and thermoelectric imaging. Materials Today. 92 (2026) 416-424 10.1016/j.mattod.2025.12.027
  4. Sang J. Park, Keisuke Hirata, Hossein Sepehri-Amin, Fuyuki Ando, Takamasa Hirai, Ken-ichi Uchida. Trans-scale spin Seebeck effect in nanostructured bulk composites based on magnetic insulator. Nature Communications. 17 [1] (2026) 6389 10.1038/s41467-026-75232-0 Open Access
  5. Andres Martin-Cid, Babu Madavali, Fuyuki Ando, Nikita Kulesh, Ken-ichi Uchida, Hossein Sepehri-Amin. Effect of Cr substitution for Mn on magnetic and transverse thermoelectric properties of isotropic Mn1-Cr AlGe magnets. Journal of Alloys and Compounds. 1057 (2026) 186802 10.1016/j.jallcom.2026.186802 Open Access
  6. Hiroaki Mamiya, Balachandran Jeyadevan, Eiji Kita, Reisho Onodera, Tetsushi Taguchi, Nikita Kulesh, Hossein Sepehri Amin. Figures of merit and screening approaches for evaluating heat generation in magnetic nanoparticles for hyperthermia. Materials Today Nano. 35 (2026) 100869 10.1016/j.mtnano.2026.100869 Open Access
  7. Jayachandran Babu, Ravi Gautam, Hossein Sepehri-Amin, Takao Mori, Titas Dasgupta, Duraisamy Sivaprahasam. Role of Grain Boundary Features in the Thermal Stability of LASTT-10 Thermoelectric Materials. ACS Applied Materials & Interfaces. 18 [30] (2026) 41226-41235 10.1021/acsami.6c08078
  8. Rajkumar Modak, Hossein Sepehri‐Amin, Yuya Sakuraba, Weinan Zhou, Ken‐ichi Uchida. Large Anomalous Nernst Conductivity in Pt 2 CoNi Permanent Magnet Films with High In‐Plane and Out‐Of‐Plane Coercivities. Advanced Functional Materials. 36 [47] (2026) e32180 10.1002/adfm.202532180
  9. Xin Tang, Yoshio Miura, Noriki Terada, Enda Xiao, Shintaro Kobayashi, Allan Döring, Terumasa Tadano, Andres Martin‐Cid, Takuo Ohkochi, Shogo Kawaguchi, Yoshitaka Matsushita, Tadakatsu Ohkubo, Tetsuya Nakamura, Konstantin Skokov, Oliver Gutfleisch, Kazuhiro Hono, Hossein Sepehri‐Amin. Control of Covalent Bond Enables Efficient Magnetic Cooling. Advanced Materials. 38 [7] (2026) e14295 10.1002/adma.202514295 Open Access
2025
  1. A.K. Srinithi, A. Bolyachkin, Xin Tang, H. Sepehri-Amin, S. Dieb, A.T. Saito, T. Ohkubo, K. Hono. Data-driven compositional optimization of La(Fe,Si)13-based magnetocaloric compounds for cryogenic applications. Scripta Materialia. 258 (2025) 116486 10.1016/j.scriptamat.2024.116486
  2. Sotaro Nishioka, Hossein Sepehri-Amin, Akiko T․ Saito. Numerical simulation of active magnetic regenerative refrigeration using Gyroid structured regenerator at room temperature. International Journal of Refrigeration. 170 (2025) 468-476 10.1016/j.ijrefrig.2024.11.018 Open Access
  3. Zexuan Wang, A.M. Döring, O. Vasylkiv, Xin Tang, K.P. Skokov, N. Terada, T. Ohkubo, O. Gutfleisch, H. Sepehri-Amin. Enhanced mechanical performance of HoB2-based compounds without sacrificing cryogenic magnetocaloric effects. Acta Materialia. 296 (2025) 121227 10.1016/j.actamat.2025.121227
  4. Mitali Madhusmita Prusty, Sri Harsha Molleti, Hiroto Takanobu, Sai Rama Krishna Malladi, Xin Tang, Hossein Sepehri-Amin. Reduced hysteresis in La 0.7 Ce 0.3 Fe 11.5 Si 1.5 hydrides by grain size reduction. Science and Technology of Advanced Materials. 26 [1] (2025) 2525742 10.1080/14686996.2025.2525742 Open Access
  5. Babu Madavali, Fuyuki Ando, Takamasa Hirai, Andres Martin-Cid, Ken-ichi Uchida, Hossein Sepehri-Amin. Systematic investigation on transverse thermoelectric conversion of RE 2 (Fe,Co) 14 B (RE = rare-earth) compounds. Science and Technology of Advanced Materials. 26 [1] (2025) 2520162 10.1080/14686996.2025.2520162 Open Access
  6. Sang J. Park, Rajkumar Modak, Ravi Gautam, Abdulkareem Alasli, Takamasa Hirai, Fuyuki Ando, Hosei Nagano, Hossein Sepehri-Amin, Ken-ichi Uchida. Designing flexible magnetic materials for zero-magnetic-field operation of the anomalous Nernst effect. Acta Materialia. (2025) 121422 10.1016/j.actamat.2025.121422
  7. Ravi Gautam, Shozo Hiramoto, Nikita Kulesh, Hiroaki Mamiya, Satoshi Okamoto, Nobuhisa Ono, Takeshi Ogasawara, Tadakatsu Ohkubo, Hossein Sepehri-Amin. Ultra-low core loss in Fe-enriched soft magnetic ribbons enabled by nanostructure and high-frequency domain engineering. Nature Communications. 16 [1] (2025) 8022 10.1038/s41467-025-63139-1 Open Access
  8. A.R. Dilipan, H. Sepehri-Amin, I. Suzuki, Y.K. Takahashi. Achieving high-density L10-FePt granular films on an electrically conductive (Mg,Ti)O underlayer for HAMR media. Scripta Materialia. 268 (2025) 116885 10.1016/j.scriptamat.2025.116885
  9. J.S. Zhang, Xin Tang, T. Ohkubo, K. Hono, H. Sepehri-Amin. Mechanism of continuous intergranular phase formation in Sm(Fe,Ti,V)12-based sintered magnets by post-sinter annealing. Acta Materialia. 294 (2025) 121160 10.1016/j.actamat.2025.121160 Open Access
  10. Daisuke Ogawa, Hossein Sepehri-Amin, Yukiko K. Takahashi. Tailoring the microstructure and formation of hexagonal-BN segregants in FePt-based granular films for improved HAMR media. Journal of Alloys and Compounds. 1032 (2025) 180243 10.1016/j.jallcom.2025.180243
  11. Takanobu Hiroto, Hossein Sepehri-Amin, Naoki Uemura, Naoya Miyauchi, Wataru Hayami, Tadakatsu Ohkubo, Tadashi Ogitsu, Kohei Soga, Kaoru Kimura. Lattice expansion due to hydrogen absorption into β-rhombohedral boron. Solid State Sciences. 163 (2025) 107907 10.1016/j.solidstatesciences.2025.107907
  12. Koichi Oyanagi, Hossein Sepehri-Amin, Kenta Takamori, Terumasa Tadano, Takumi Imamura, Ren Nagasawa, Krishnan Mahalingam, Takamasa Hirai, Fuyuki Ando, Yuya Sakuraba, Satoru Kobayashi, Ken-ichi Uchida. Simultaneous achievement of large anomalous Nernst effect and reduced thermal conductivity in sintered polycrystalline topological Heusler ferromagnets. Acta Materialia. 296 (2025) 121239 10.1016/j.actamat.2025.121239 Open Access
  13. A.R. Dilipan, H. Sepehri-Amin, R. Modak, V.K. Kushwaha, Y. Sakuraba, K. Uchida, K. Hono, Y.K. Takahashi. Combinatorial sputtering synthesis of TbCu7-type Sm-Fe based compounds: A study on phase, composition, and extrinsic magnetic properties. Journal of Alloys and Compounds. 1010 (2025) 177723 10.1016/j.jallcom.2024.177723
  14. P. Tozman, G. Hrkac, C.E. Patrick, J.B. Staunton, T. Saito, T. Sasaki, T. Ohkubo, H. Sepehri-Amin. Effect of Co on twin formation and magnetic properties of Sm(Fe,Ti,V)12 alloys. Scripta Materialia. 258 (2025) 116491 10.1016/j.scriptamat.2024.116491 Open Access
  15. Z.H. Kautsar, H. Sepehri-Amin, Xin Tang, N. Kulesh, T.T. Sasaki, T. Ohkubo, K. Hono. Heavy rare earth-free high resistivity and coercivity Nd-Fe-B hot-deformed magnet developed by Pr-Cu diffusion and CaF2-LiF eutectic addition. Journal of Alloys and Compounds. 1010 (2025) 177738 10.1016/j.jallcom.2024.177738
  16. Abdullatif Durgun, Dominik Ohmer, Matthias Katter, Andreas Thul, Simon Steentjes, Hossein Sepehri Amin, Oliver Gutfleisch, Imants Dirba. Toward Maximum Utilization of Heavy Rare Earths in Sintered Nd–Fe–B Magnets by Grain Boundary Diffusion Source and Application Area Optimization. Advanced Engineering Materials. 27 [22] (2025) e202501145 10.1002/adem.202501145 Open Access
  17. Hiroaki Mamiya, Noriki Terada, Kosuke Hiroi, Takenao Shinohara, Hossein Sepehri-Amin. Role of neutron Bragg-edge spectroscopy in development of practical magnetic materials. Journal of Applied Physics. 138 [14] (2025) 143904 10.1063/5.0285904 Open Access
  18. Yebin Lee, Fuyuki Ando, Takamasa Hirai, Rajkumar Modak, Hossein Sepehri‐Amin, Ken‐ichi Uchida. Zero‐Field Hybridization of Anomalous Nernst and Off‐diagonal Seebeck Effects in Artificially Tilted Multilayers. Annalen der Physik. 537 [8] (2025) e00127 10.1002/andp.202500127 Open Access
  19. Simon Rosenqvist Larsen, Noriki Terada, Xin Tang, Hiroaki Mamiya, Yusuke Nambu, Daisuke Okuyama, Hossein Sepehri-Amin. Magnetic correlations and crystal structure changes in Fe- and Ni-substituted ErCo2 with reversible giant magnetocaloric effect. Physical Review B. 112 [1] (2025) 014443 10.1103/6lt2-4pwb Open Access
  20. Zulfa Hilmi Kautsar, Babu Madavali, Takamasa Hirai, Ken-ichi Uchida, Hossein Sepehri-Amin. Impact of intergranular phase variations on the anomalous Nernst effect in Nd-Fe-B permanent magnets. Energy Materials. 5 [10] (2025) 500129 10.20517/energymater.2025.26 Open Access
  21. Fuyuki Ando, Takamasa Hirai, Abdulkareem Alasli, Hossein Sepehri-Amin, Yutaka Iwasaki, Hosei Nagano, Ken-ichi Uchida. Multifunctional composite magnet realizing record-high transverse thermoelectric generation. Energy & Environmental Science. 18 [9] (2025) 4068-4079 10.1039/d4ee04845h Open Access
  22. Dmytro Demirskyi, Hossein Sepehri‐Amin, Oleg O. Vasylkiv. High‐temperature deformation and consolidation of polycrystalline α‐SiC by spark plasma sintering. International Journal of Applied Ceramic Technology. 22 [2] (2025) e14967 10.1111/ijac.14967 Open Access
  23. Hiroaki Mamiya, Noriki Terada, Simon Rosenqvist Larsen, Naohito Tsujii, Kosuke Hiroi, Takenao Shinohara, Hossein Sepehri-Amin. Evaluation of Ho100−x−yErxCey magnetic refrigerants using advanced multisample neutron transmission spectroscopy. Physical Review Research. 7 [1] (2025) 013233 10.1103/physrevresearch.7.013233 Open Access
  24. Poonam Rani, Takumi Murakami, Yuto Watanabe, Hossein Sepehri-Amin, Hiroto Arima, Aichi Yamashita, Yoshikazu Mizuguchi. Nonvolatile magneto-thermal switching driven by vortex trapping in commercial In-Sn solder. Applied Physics Express. 18 [3] (2025) 033001 10.35848/1882-0786/adb6ee Open Access
2024
  1. A.R. Dilipan, D. Ogawa, H. Sepehri-Amin, P. Tozman, T. Hiroto, K. Hono, Y.K. Takahashi. Excellent intrinsic magnetic properties in the TbCu7-type Sm-Fe-N compound. Acta Materialia. 274 (2024) 119996 10.1016/j.actamat.2024.119996 Open Access
  2. Takamasa Hirai, Fuyuki Ando, Hossein Sepehri-Amin, Ken-ichi Uchida. Hybridizing anomalous Nernst effect in artificially tilted multilayer based on magnetic topological material. Nature Communications. 15 [1] (2024) 9643 10.1038/s41467-024-53723-2 Open Access
  3. Anton Bolyachkin, Ekaterina Dengina, Nikita Kulesh, Xin Tang, Hossein Sepehri-Amin, Tadakatsu Ohkubo, Kazuhiro Hono. Tomography-based digital twin of Nd-Fe-B permanent magnets. npj Computational Materials. 10 [1] (2024) 34 10.1038/s41524-024-01218-5 Open Access
  4. Z. Wang, E. Dengina, Anna Kosogor, T. Hiroto, Xin Tang, N. Kulesh, A. Bolyachkin, T. Ohkubo, H. Sepehri-Amin. Insights into reduction of hysteresis in (Mn, Fe)2(P, Si) compounds by experimental approach and Landau theory. Materialia. 37 (2024) 102195 10.1016/j.mtla.2024.102195 Open Access
  5. H. Sepehri-Amin, N. Kulesh, Y. Mori, T. Ohkubo, K. Hono, T. Shima. Microstructure and coercivity of Al-diffused Sm(Fe,Co,B)12 film. Scripta Materialia. 242 (2024) 115955 10.1016/j.scriptamat.2023.115955 Open Access
  6. Hiroto Arima, Md. Riad Kasem, Hossein Sepehri-Amin, Fuyuki Ando, Ken-ichi Uchida, Yuto Kinoshita, Masashi Tokunaga, Yoshikazu Mizuguchi. Observation of nonvolatile magneto-thermal switching in superconductors. Communications Materials. 5 [1] (2024) 34 10.1038/s43246-024-00465-9 Open Access
  7. Anton Bolyachkin, Ekaterina Dengina, Hossein Sepehri-Amin, Tadakatsu Ohkubo, Kazuhiro Hono. Micromagnetic simulations of Nd-Fe-B hot-deformed magnets subjected to eutectic grain boundary diffusion process. Scripta Materialia. 247 (2024) 116095 10.1016/j.scriptamat.2024.116095 Open Access
  8. N. Kulesh, A. Bolyachkin, E. Dengina, Xin Tang, T. Ohkubo, T. Kajiwara, H. Miyawaki, H. Sepehri-Amin, K. Hono. Coercivity limits in Nd-Fe-B hot-deformed magnets with ultrafine microstructure. Acta Materialia. 276 (2024) 120159 10.1016/j.actamat.2024.120159 Open Access
  9. SEPEHRI AMIN, Hossein, BOLYACHKIN, Anton, TANG, Xin, Sepehri-Amin H.. High coercivity permanent magnets without reliance on scarce elements. 応用物理. 93 [8] (2024) 466-471 10.11470/oubutsu.93.8_466 Open Access
  10. Ravi Gautam, Takamasa Hirai, Abdulkareem Alasli, Hosei Nagano, Tadakatsu Ohkubo, Ken-ichi Uchida, Hossein Sepehri-Amin. Creation of flexible spin-caloritronic material with giant transverse thermoelectric conversion by nanostructure engineering. Nature Communications. 15 [1] (2024) 2184 10.1038/s41467-024-46475-6 Open Access
  11. P. Tozman, S. Isogami, I. Suzuki, A. Bolyachkin, H. Sepehri-Amin, S.J. Greaves, H. Suto, Y. Sasaki, T.Y. Chang, Y. Kubota, P. Steiner, P.W. Huang, K. Hono, Y.K. Takahashi. Dual-layer FePt-C granular media for multi-level heat-assisted magnetic recording. Acta Materialia. 271 (2024) 119869 10.1016/j.actamat.2024.119869 Open Access
  12. A.K. Srinithi, Xin Tang, H. Sepehri-Amin, T. Ohkubo, K. Hono. (Nd,Sm,La)-Fe-B-based hot-deformed magnets with excellent comprehensive properties for variable flux permanent magnet motors. Acta Materialia. 281 (2024) 120387 10.1016/j.actamat.2024.120387 Open Access
  13. Daisuke Ogawa, Anton Bolyachkin, Angayarkanni R. Dilipan, Nikita Kulesh, Hossein Sepehri-Amin, Yukiko K. Takahashi. Exchange-coupled Fe - Pt / Ru / Fe - Pt nanogranular films as potential heat-assisted-magnetic-recording media with reduced writing temperature. Physical Review Applied. 22 [5] (2024) 054060 10.1103/physrevapplied.22.054060 Open Access
  14. Yutaro Takeuchi, Hossein Sepehri-Amin, Satoshi Sugimoto, Takanobu Hiroto, Shinya Kasai. Magnetic and magneto-transport properties of non-collinear antiferromagnetic Mn3Ge epitaxial films. APL Materials. 12 [7] (2024) 071110 10.1063/5.0217710 Open Access
  15. Ken‐ichi Uchida, Takamasa Hirai, Fuyuki Ando, Hossein Sepehri‐Amin. Hybrid Transverse Magneto‐Thermoelectric Cooling in Artificially Tilted Multilayers. Advanced Energy Materials. 14 [3] (2024) 2302375 10.1002/aenm.202302375 Open Access
2023
  1. Xin Tang, Jiangnan Li, Hossein Sepehri-Amin, Anton Bolyachkin, Andres Martin-Cid, Shintaro Kobayashi, Yoshinori Kotani, Motohiro Suzuki, Asako Terasawa, Yoshihiro Gohda, Tadakatsu Ohkubo, Tetsuya Nakamura, Kazuhiro Hono. Unveiling the origin of the large coercivity in (Nd, Dy)-Fe-B sintered magnets. NPG Asia Materials. 15 [1] (2023) 50 10.1038/s41427-023-00498-5 Open Access
  2. Hiroaki Mamiya, Yojiro Oba, Kosuke Hiroi, Takayuki Miyatake, Ravi Gautam, Hossein Sepehri-Amin, Tadakatsu Ohkubo. Magnetic Structural Analysis of Nanocrystalline Soft Magnets by Small-Angle Neutron Scattering. IEEE Magnetics Letters. 14 (2023) 7100105 10.1109/lmag.2023.3242108
  3. I. Suzuki, H. Sepehri-Amin, K. Hono, Y.K. Takahashi. Control of grain density by varying lattice mismatch in FePt-C film for heat assisted magnetic recording. Journal of Alloys and Compounds. 968 (2023) 172196 10.1016/j.jallcom.2023.172196
  4. P. Tozman, H. Sepehri-Amin, T. Abe, K. Hono, Y.K. Takahashi. Exploring secondary phases in the Sm–Fe–V system beneficial for coercivity. Acta Materialia. 258 (2023) 119197 10.1016/j.actamat.2023.119197
  5. A.K. Srinithi, Xin Tang, H. Sepehri-Amin, J. Zhang, T. Ohkubo, K. Hono. High-coercivity SmFe12-based anisotropic sintered magnets by Cu addition. Acta Materialia. 256 (2023) 119111 10.1016/j.actamat.2023.119111 Open Access
  6. I. Suzuki, T. Abe, H. Sepehri-Amin, K. Hono, Y.K. Takahashi. Microstructure evolution in FePt-Cr2O3 granular thin films. Journal of Magnetism and Magnetic Materials. 579 (2023) 170874 10.1016/j.jmmm.2023.170874
  7. N. Kulesh, A. Bolyachkin, I. Suzuki, Y.K. Takahashi, H. Sepehri-Amin, K. Hono. Data-driven optimization of FePt heat-assisted magnetic recording media accelerated by deep learning TEM image segmentation. Acta Materialia. 255 (2023) 119039 10.1016/j.actamat.2023.119039 Open Access
  8. Z.H. Kautsar, H. Sepehri-Amin, Xin Tang, R. Iguchi, K. Uchida, T. Ohkubo, K. Hono. High-resistivity anisotropic hot-deformed Nd-Fe-B magnets prepared from DyF3 electrophoretic deposited powders. Journal of Alloys and Compounds. 942 (2023) 168855 10.1016/j.jallcom.2023.168855 Open Access
  9. S. Kobayashi, D. Ogawa, X.D. Xu, Y.K. Takahashi, A. Martin-Cid, K. Ishigami, Y. Kotani, M. Suzuki, T. Yoshioka, H. Tsuchiura, H. Sepehri-Amin, T. Ohkubo, K. Hono, S. Hirosawa, T. Nakamura. Multimodal analysis of Zr substitution effects on magnetic and crystallographic properties in (Sm1−Zr )(Fe0.8Co0.2)12 compounds with ThMn12 structure. Acta Materialia. 242 (2023) 118454 10.1016/j.actamat.2022.118454
2022
  1. Rajkumar Modak, Yuya Sakuraba, Takamasa Hirai, Takashi Yagi, Hossein Sepehri-Amin, Weinan Zhou, Hiroto Masuda, Takeshi Seki, Koki Takanashi, Tadakatsu Ohkubo, Ken-ichi Uchida. Sm-Co-based amorphous alloy films for zero-field operation of transverse thermoelectric generation. Science and Technology of Advanced Materials. 23 [1] (2022) 10.1080/14686996.2022.2138538 Open Access
  2. Xin Tang, H. Sepehri-Amin, N. Terada, A. Martin-Cid, I. Kurniawan, S. Kobayashi, Y. Kotani, H. Takeya, J. Lai, Y. Matsushita, T. Ohkubo, Y. Miura, T. Nakamura, K. Hono. Magnetic refrigeration material operating at a full temperature range required for hydrogen liquefaction. Nature Communications. 13 [1] (2022) 1817 10.1038/s41467-022-29340-2 Open Access
  3. Makoto Takeuchi, Motohiro Suzuki, Shintaro Kobayashi, Yoshinori Kotani, Tetsuya Nakamura, Nobuaki Kikuchi, Anton Bolyachkin, Hossein Sepehri-Amin, Tadakatsu Ohkubo, Kazuhiro Hono, Yasuhiro Une, Satoshi Okamoto. Real picture of magnetic domain dynamics along the magnetic hysteresis curve inside an advanced permanent magnet. NPG Asia Materials. 14 [1] (2022) 70 10.1038/s41427-022-00417-0 Open Access
  4. J.S. Zhang, Xin Tang, A. Bolyachkin, A.K. Srinithi, T. Ohkubo, H. Sepehri-Amin, K. Hono. Microstructure and extrinsic magnetic properties of anisotropic Sm(Fe,Ti,V)12-based sintered magnets. Acta Materialia. 238 (2022) 118228 10.1016/j.actamat.2022.118228
  5. E. Dengina, A. Bolyachkin, H. Sepehri-Amin, K. Hono. Machine Learning Approach for Evaluation of Nanodefects and Magnetic Anisotropy in FePt Granular Films. Scripta Materialia. 218 (2022) 114797 10.1016/j.scriptamat.2022.114797 Open Access
  6. Hossein Sepehri-Amin, Kazuki Imasato, Maxwell Wood, Jimmy Jiahong Kuo, G. Jeffrey Snyder. Evolution of Nanometer-Scale Microstructure within Grains and in the Intergranular Region in Thermoelectric Mg3(Sb, Bi)2 Alloys. ACS Applied Materials & Interfaces. 14 [33] (2022) 37958-37966 10.1021/acsami.2c09905
  7. T. T. Sasaki, H. Sepehri-Amin, J. Uzuhashi, T. Ohkubo, K. Hono. Complementary and correlative (S)TEM/APT analysis of functional and structural alloys. MRS Bulletin. 47 [7] (2022) 688-695 10.1557/s43577-022-00374-7
  8. Jiawei Lai, A. Bolyachkin, N. Terada, S. Dieb, Xin Tang, T. Ohkubo, H. Sepehri-Amin, K. Hono. Machine learning assisted development of Fe2P-type magnetocaloric compounds for cryogenic applications. Acta Materialia. 232 (2022) 117942 10.1016/j.actamat.2022.117942
  9. H. Sepehri-Amin, Xin Tang, T. Ohkubo, K. Hono. Magnetization Reversals of Nd-Fe-B-Based Magnets with Different Microstructural Features. JOM. 74 [6] (2022) 2328-2337 10.1007/s11837-022-05287-z
  10. P. Tozman, T. Fukazawa, D. Ogawa, H. Sepehri-Amin, A. Bolyachkin, T. Miyake, S. Hirosawa, K. Hono, Y.K. Takahashi. Peculiar behavior of V on the Curie temperature and anisotropy field of SmFe12-xVx compounds. Acta Materialia. 232 (2022) 117928 10.1016/j.actamat.2022.117928
  11. Jiangnan Li, Hossein Sepehri-Amin, Tadakatsu Ohkubo, Kazuhiro Hono. Identifying the mechanism of hard magnet coercivity by its angular dependence. Physical Review B. 105 [17] (2022) 174432 10.1103/physrevb.105.174432
  12. A.K. Srinithi, H. Sepehri-Amin, Y. Takagiwa, K. Hono. Effect of microstructure on the electrical conductivity of p-type Fe–Al–Si thermoelectric materials. Journal of Alloys and Compounds. 903 (2022) 163835 10.1016/j.jallcom.2022.163835
  13. Xin Tang, H. Sepehri-Amin, A. Bolyachkin, T. Ohkubo, K. Hono. (Nd,La,Ce)-Fe-B hot-deformed magnets for application of variable-magnetic-force motors. Acta Materialia. 228 (2022) 117747 10.1016/j.actamat.2022.117747
  14. A. Bolyachkin, H. Sepehri-Amin, M. Kambayashi, Y. Mori, T. Ohkubo, Y.K. Takahashi, T. Shima, K. Hono. Coercivity engineering in Sm(Fe0.8Co0.2)12B0.5 thin films by Si grain boundary diffusion. Acta Materialia. 227 (2022) 117716 10.1016/j.actamat.2022.117716 Open Access
  15. Pelin Tozman, Hossein Sepehri-Amin, Xin Tang, Tadakatsu Ohkubo, Kazuhiro Hono. Development of Co-lean (Sm,Y)(Fe,Co,Ti)12 compounds with large saturation magnetization. Applied Physics Express. 15 [4] (2022) 045505 10.35848/1882-0786/ac5b34
  16. A. Bolyachkin, H. Sepehri-Amin, I. Suzuki, H. Tajiri, Y.K. Takahashi, K. Srinivasan, H. Ho, H. Yuan, T. Seki, A. Ajan, K. Hono. Transmission electron microscopy image based micromagnetic simulations for optimizing nanostructure of FePt-X heat-assisted magnetic recording media. Acta Materialia. 227 (2022) 117744 10.1016/j.actamat.2022.117744 Open Access
  17. D. Demirskyi, H. Sepehri-Amin, T.S. Suzuki, K. Yoshimi, O. Vasylkiv. Ultra-high temperature flexure and strain driven amorphization in polycrystalline boron carbide bulks. Scripta Materialia. 210 (2022) 114487 10.1016/j.scriptamat.2021.114487 Open Access
  18. LI Jiangnan, SEPEHRI-AMIN Hossein, 佐々木 泰祐, 大久保 忠勝, 宝野 和博. Nd-Fe-B系永久磁石の保磁力に関するよくある質問. 粉体および粉末冶金. 69 [Supplement] (2022) S38-S51 10.2497/jjspm.69.s38 Open Access
  19. 高橋 有紀子, SEPEHRI-AMIN H, 大久保 忠勝. SmFe12系永久磁石の最近の進展. 粉体および粉末冶金. 69 [Supplement] (2022) S74-S83 10.2497/jjspm.69.s74 Open Access
2021
  1. Yukiko Takahashi, Hossein Sepehri-Amin, Tadakatsu Ohkubo. Recent advances in SmFe12-based permanent magnets. Science and Technology of Advanced Materials. 22 [1] (2021) 449-460 10.1080/14686996.2021.1913038 Open Access
  2. Jiangnan Li, Hossein Sepehri-Amin, Taisuke Sasaki, Tadakatsu Ohkubo, Kazuhiro Hono. Most frequently asked questions about the coercivity of Nd-Fe-B permanent magnets. Science and Technology of Advanced Materials. 22 [1] (2021) 386-403 10.1080/14686996.2021.1916377 Open Access
  3. M. Korent, Xin Tang, H. Sepehri-Amin, K. Hioki, K.Ž. Soderžnik, S. Kobe, T. Ohkubo, K. Hono. Significant coercivity enhancement of hot-deformed bulk magnets by two-step diffusion process using a minimal amount of Dy. Scripta Materialia. 205 (2021) 114207 10.1016/j.scriptamat.2021.114207
  4. Jiawei Lai, H. Sepehri-Amin, Xin Tang, J. Li, Y. Matsushita, T. Ohkubo, A.T. Saito, K. Hono. Reduction of hysteresis in (La1-Ce ) (Mn Fe11.4-)Si1.6 magnetocaloric compounds for cryogenic magnetic refrigeration. Acta Materialia. 220 (2021) 117286 10.1016/j.actamat.2021.117286
  5. Y. Milov, Xin Tang, H. Sepehri-Amin, N. N. Sysoev, T. Ohkubo, K. Hono. Influence of LRE (Ce, Y, and La) on microstructure and magnetic properties of (Nd0.8LRE0.2)–Fe–B hot-deformed magnets. AIP Advances. 11 [11] (2021) 115118 10.1063/5.0072706 Open Access
  6. Nagarjuna Asam, Hirofumi Suto, Shingo Tamaru, Hossein Sepehri-Amin, Anton Bolyachkin, Tomoya Nakatani, Weinan Zhou, Hitoshi Kubota, Yuya Sakuraba. Analysis method of a spin-torque oscillator using dc resistance change during injection locking to an external microwave magnetic field. Applied Physics Letters. 119 [14] (2021) 142405 10.1063/5.0058847
  7. J. S. Zhang, Xin Tang, H. Sepehri-Amin, A. K. Srinithi, T. Ohkubo, K. Hono. Origin of coercivity in an anisotropic Sm(Fe,Ti,V)12-based sintered magnet. Acta Materialia. 217 (2021) 117161 10.1016/j.actamat.2021.117161
  8. A.K. Srinithi, H. Sepehri-Amin, Xin Tang, P. Tozman, J. Li, J. Zhang, S. Kobayashi, T. Ohkubo, T. Nakamura, K. Hono. Phase relations and extrinsic magnetic properties of Sm–(Fe,Co)–Ti–(Ga)-based alloys for ThMn12-type permanent magnets. Journal of Magnetism and Magnetic Materials. 529 (2021) 167866 10.1016/j.jmmm.2021.167866
  9. Xin Tang, J. Li, A.K. Srinithi, H. Sepehri-Amin, T. Ohkubo, K. Hono. Role of V on the coercivity of SmFe12-based melt-spun ribbons revealed by machine learning and microstructure characterizations. Scripta Materialia. 200 (2021) 113925 10.1016/j.scriptamat.2021.113925
  10. I. Dirba, H. Sepehri-Amin, K. Skokov, Y. Skourski, K. Hono, O. Gutfleisch. Magnetic properties and microstructure of Sm5Fe17-based composite magnets. Acta Materialia. 212 (2021) 116912 10.1016/j.actamat.2021.116912
  11. Hirofumi Suto, Hossein Sepehri-Amin, Nagarjuna Asam, Weinan Zhou, Anton Bolyachkin, Masayuki Takagishi, Naoyuki Narita, Shingo Tamaru, Tomoya Nakatani, Yuya Sakuraba. Analysis of an all-in-plane spin-torque oscillator using injection locking to an external microwave magnetic field. Applied Physics Express. 14 [5] (2021) 053001 10.35848/1882-0786/abf667 Open Access
  12. Ippei Suzuki, Shoichi Kubo, Hosein Sepehri-Amin, Yukiko K. Takahashi. Dependence of the Growth Mode in Epitaxial FePt Films on Surface Free Energy. ACS Applied Materials & Interfaces. 13 [14] (2021) 16620-16627 10.1021/acsami.0c22510
  13. I. Dirba, H. Sepehri-Amin, Ik-Jin Choi, Jin-Hyeok Choi, Hyoun-Soo Uh, Tae-Hoon Kim, Soon-Jae Kwon, T. Ohkubo, K. Hono. SmFe12-based hard magnetic alloys prepared by reduction-diffusion process. Journal of Alloys and Compounds. 861 (2021) 157993 10.1016/j.jallcom.2020.157993
  14. Mahmoud Rasly, Tomoya Nakatani, Jiangnan Li, Hossein Sepehri-Amin, Hiroaki Sukegawa, Yuya Sakuraba. Magnetic, magnetoresistive and low-frequency noise properties of tunnel magnetoresistance sensor devices with amorphous CoFeBTa soft magnetic layers. Journal of Physics D: Applied Physics. 54 [9] (2021) 095002 10.1088/1361-6463/abc2f5
  15. Xin Tang, Jiawei Lai, H. Sepehri-Amin, T. Ohkubo, K. Hono. (Pr0.75Ce0.25)-Fe-B hot-deformed magnets for cryogenic applications. Scripta Materialia. 194 (2021) 113648 10.1016/j.scriptamat.2020.113648
  16. P. Tozman, H. Sepehri-Amin, K. Hono. Prospects for the development of SmFe12-based permanent magnets with a ThMn12-type phase. Scripta Materialia. 194 (2021) 113686 10.1016/j.scriptamat.2020.113686
  17. P. Tozman, H. Sepehri-Amin, T. Ohkubo, K. Hono. Intrinsic magnetic properties of (Sm,Gd)Fe12-based compounds with minimized addition of Ti. Journal of Alloys and Compounds. 855 (2021) 157491 10.1016/j.jallcom.2020.157491
  18. Takamasa Hirai, Hossein Sepehri-Amin, Kento Hasegawa, Tomohiro Koyama, Ryo Iguchi, Tadakatsu Ohkubo, Daichi Chiba, Ken-ichi Uchida. Strain-induced cooling-heating switching of anisotropic magneto-Peltier effect. Applied Physics Letters. 118 [2] (2021) 022403 10.1063/5.0034858
  19. Xin Tang, J. Li, H. Sepehri-Amin, T. Ohkubo, K. Hioki, A. Hattori, K. Hono. Improved coercivity and squareness in bulk hot-deformed Nd–Fe–B magnets by two-step eutectic grain boundary diffusion process. Acta Materialia. 203 (2021) 116479 10.1016/j.actamat.2020.11.021
2020
  1. Takahiro Yomogita, Satoshi Okamoto, Nobuaki Kikuchi, Osamu Kitakami, Hossein Sepehri-Amin, Yukiko K. Takahashi, Tadakatsu Ohkubo, Kazuhiro Hono, Keiko Hioki, Atsushi Hattori. Direct detection and stochastic analysis on thermally activated domain-wall depinning events in micropatterned Nd-Fe-B hot-deformed magnets. Acta Materialia. 201 (2020) 7-13 10.1016/j.actamat.2020.09.074
  2. Jiawei Lai, Xin Tang, Hossein Sepehri-Amin, Kazuhiro Hono. Tuning magnetocaloric effect of Ho1-Gd Ni2 and HoNi2-Co alloys around hydrogen liquefaction temperature. Scripta Materialia. 188 (2020) 302-306 10.1016/j.scriptamat.2020.07.046 Open Access
  3. J. Li, Xin Tang, H. Sepehri-Amin, T. Ohkubo, K. Hioki, A. Hattori, K. Hono. On the temperature-dependent coercivities of anisotropic Nd-Fe-B magnet. Acta Materialia. 199 (2020) 288-296 10.1016/j.actamat.2020.08.040
  4. H. Sepehri-Amin, Y. Tamazawa, M. Kambayashi, G. Saito, Y.K. Takahashi, D. Ogawa, T. Ohkubo, S. Hirosawa, M. Doi, T. Shima, K. Hono. Achievement of high coercivity in Sm(Fe0.8Co0.2)12 anisotropic magnetic thin film by boron doping. Acta Materialia. 194 (2020) 337-342 10.1016/j.actamat.2020.05.026 Open Access
  5. Jiawei Lai, Xin Tang, H. Sepehri-Amin, K. Hono. Tuning transition temperature of magnetocaloric Mn1.8Fe0.2(P0.59Si0.41) alloys for cryogenic magnetic refrigeration. Scripta Materialia. 183 (2020) 127-132 10.1016/j.scriptamat.2020.03.024
  6. E. Kirk, C. Bull, S. Finizio, H. Sepehri-Amin, S. Wintz, A. K. Suszka, N. S. Bingham, P. Warnicke, K. Hono, P. W. Nutter, J. Raabe, G. Hrkac, T. Thomson, L. J. Heyderman. Anisotropy-induced spin reorientation in chemically modulated amorphous ferrimagnetic films. Physical Review Materials. 4 [7] (2020) 074403 10.1103/physrevmaterials.4.074403
  7. Rajkumar Modak, Ryo Iguchi, Hossein Sepehri-Amin, Asuka Miura, Ken-ichi Uchida. Simultaneous direct measurements of conventional and inverse magnetocaloric effects in Ni–Mn-based Heusler alloys using lock-in thermography technique. AIP Advances. 10 [6] (2020) 065005 10.1063/5.0005865 Open Access
  8. Xin Tang, S.Y. Song, J. Li, H. Sepehri-Amin, T. Ohkubo, K. Hono. Thermally-stable high coercivity Ce-substituted hot-deformed magnets with 20% Nd reduction. Acta Materialia. 190 (2020) 8-15 10.1016/j.actamat.2020.03.017
  9. J. Li, Xin Tang, H. Sepehri-Amin, T.T. Sasaki, T. Ohkubo, K. Hono. Angular dependence and thermal stability of coercivity of Nd-rich Ga-doped Nd–Fe–B sintered magnet. Acta Materialia. 187 (2020) 66-72 10.1016/j.actamat.2020.01.035
  10. I. Dirba, Y. Harashima, H. Sepehri-Amin, T. Ohkubo, T. Miyake, S. Hirosawa, K. Hono. Thermal decomposition of ThMn12-type phase and its optimum stabilizing elements in SmFe12-based alloys. Journal of Alloys and Compounds. 813 (2020) 152224 10.1016/j.jallcom.2019.152224
  11. Xin Tang, J. Li, Y. Miyazaki, H. Sepehri-Amin, T. Ohkubo, T. Schrefl, K. Hono. Relationship between the thermal stability of coercivity and the aspect ratio of grains in Nd-Fe-B magnets: Experimental and numerical approaches. Acta Materialia. 183 (2020) 408-417 10.1016/j.actamat.2019.11.038
  12. P. Tozman, H. Sepehri-Amin, L.T. Zhang, J. Wang, X.D. Xu, K. Hono. An alternative approach to the measurement of anisotropy field – Single grain extraction. Journal of Magnetism and Magnetic Materials. 494 (2020) 165747 10.1016/j.jmmm.2019.165747
2019
  1. Takahiro Yomogita, Nobuaki Kikuchi, Satoshi Okamoto, Osamu Kitakami, Hossein Sepehri-Amin, Tadakatsu Ohkubo, Kazuhiro Hono, Keiko Hioki, Atsushi Hattori. Detection of elemental magnetization reversal events in a micro-patterned Nd-Fe-B hot-deformed magnet. AIP Advances. 9 [12] (2019) 125052 10.1063/1.5129830 Open Access
  2. Asuka Miura, Hossein Sepehri-Amin, Keisuke Masuda, Hiroki Tsuchiura, Yoshio Miura, Ryo Iguchi, Yuya Sakuraba, Junichiro Shiomi, Kazuhiro Hono, Ken-ichi Uchida. Observation of anomalous Ettingshausen effect and large transverse thermoelectric conductivity in permanent magnets. Applied Physics Letters. 115 [22] (2019) 222403 10.1063/1.5131001
  3. P. Tozman, Y.K. Takahashi, H. Sepehri-Amin, D. Ogawa, S. Hirosawa, K. Hono. The effect of Zr substitution on saturation magnetization in (Sm1-xZrx)(Fe0.8Co0.2)12 compound with the ThMn12 structure. Acta Materialia. 178 (2019) 114-121 10.1016/j.actamat.2019.08.003
  4. I. Dirba, J. Li, H. Sepehri-Amin, T. Ohkubo, T. Schrefl, K. Hono. Anisotropic, single-crystalline SmFe12-based microparticles with high roundness fabricated by jet-milling. Journal of Alloys and Compounds. 804 (2019) 155-162 10.1016/j.jallcom.2019.06.365
  5. 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
  6. J. Wang, H. Sepehri-Amin, Y.K. Takahashi, T. Ohkubo, K. Hono. Magnetic in-plane components of FePt nanogranular film on polycrystalline MgO underlayer for heat-assisted magnetic recording media. Acta Materialia. 177 (2019) 1-8 10.1016/j.actamat.2019.07.017
  7. H. Sepehri-Amin, I. Dirba, Xin Tang, T. Ohkubo, T. Schrefl, O. Gutfleisch, K. Hono. Development of high coercivity anisotropic Nd-Fe-B/Fe nanocomposite powder using hydrogenation disproportionation desorption recombination process. Acta Materialia. 175 (2019) 276-285 10.1016/j.actamat.2019.06.017
  8. Xin Tang, H. Sepehri-Amin, M. Matsumoto, T. Ohkubo, K. Hono. Role of Co on the magnetic properties of Ce-substituted Nd-Fe-B hot-deformed magnets. Acta Materialia. 175 (2019) 1-10 10.1016/j.actamat.2019.05.064
  9. Christian Huber, Hossein Sepehri-Amin, Michael Goertler, Martin Groenefeld, Iulian Teliban, Kazuhiro Hono, Dieter Suess. Coercivity enhancement of selective laser sintered NdFeB magnets by grain boundary infiltration. Acta Materialia. 172 (2019) 66-71 10.1016/j.actamat.2019.04.037
  10. 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
  11. W. Zhou, H. Sepehri-Amin, T. Taniguchi, S. Tamaru, Y. Sakuraba, S. Kasai, H. Kubota, K. Hono. Inducing out-of-plane precession of magnetization for microwave-assisted magnetic recording with an oscillating polarizer in a spin-torque oscillator. Applied Physics Letters. 114 [17] (2019) 172403 10.1063/1.5086476
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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. 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
  8. 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
  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 Open Access
  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) 054010 10.1103/physrevapplied.9.054010
  11. 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
  12. 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
  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. 大久保 忠勝, 宝野 和博. マイクロマグネティクス計算によるNd-Fe-B磁石磁化反転過程の解析. 日本金属学会誌. 81 [1] (2017) 11-18 10.2320/jinstmet.ja201602 Open Access
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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) 054007 10.1103/physrevapplied.7.054007
  8. 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
  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. 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. 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 10.1109/tmag.2015.2477313
  2. 秋屋 貴博, 日置 敬子, 服部 篤, 大久保 忠勝, 宝野 和博. 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. 電気学会論文誌．　Ａ. 136 [8] (2016) 478-483 10.1541/ieejfms.136.478
  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 Open Access
  4. 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
  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
2014
  1. 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
  2. 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
  3. 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
  4. 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
  5. T. Hozumi, P. LeClair, G. Mankey, C. Mewes, H. Sepehri-Amin, K. Hono, T. Suzuki. Magnetic and structural properties of MnBi multilayered thin films. Journal of Applied Physics. 115 [17] (2014) 17A737 10.1063/1.4867127
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. 宝野 和博, 大久保 忠勝, Sepehri-Amin H. Nd-Fe-B 磁石の高保磁力化をめざした微細組織制御. 日本金属学会誌. 76 [1] (2012) 2-11 10.2320/jinstmet.76.2 Open Access
2011
  1. 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
  2. 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
  3. 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
  4. 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
  5. 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
2010
  1. 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
  2. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Grain boundary structure and chemistry of Dy-diffusion processed Nd-Fe-B sintered magnets. JOURNAL OF APPLIED PHYSICS. (2010) 09A745-1-09A745-3
  3. 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. 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

書籍 TSV

2026
  1. BOLYACHKIN, Anton, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. Physical Metallurgy of Permanent Magnets. Physical Metallurgy. Elsevier, 2026, 77.
2018
  1. SEPEHRI AMIN, Hossein, HIROSAWA, Satoshi, HONO, Kazuhiro. Advances in Nd-Fe-B Based Permanent Magnets. Zoe Kruze, 2018

会議録 TSV

2014
  1. 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. proceeding of REPM2014. (2014) 406-408
2012
  1. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, M. Yano , T. Shoji , T. Schrefl, HONO, Kazuhiro. Microstructure and coercivity of hot deformed Nd-Fe-B anisotropic magnets with non-magnetic grain boundary phase. Proceeding of Rare Earth Permanent Magnets and their Applications REPM. (2012) 71-76
2010
  1. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Atom probe study on the grain boundary chemistry of Nd-Fe-B sintered magnets. Rare-Earth Magnets and their applications. (2010) 47-50

口頭発表 TSV

2026
  1. Ruben Perez, Manuel González Lastre, Kyungmin Kim, Estefanía Fernández-Villanueva, Pablo Pou, SEPEHRI AMIN, Hossein, Masayuki Abe, KAWAI, Shigeki, M. Verónica Ganduglia-Pirovano,, CUSTANCE, Oscar. Atomic-scale reactivity of the CeO2(100) surface reconstructions by scanning probe microscopy. The 27th International Conference on Non-Contact Atomic Force Microscopy. 2026
  2. BOLYACHKIN, Anton, KULESH, Nikita, TANG, Xin, SEPEHRI AMIN, Hossein. Revisiting Coercivity Mechanism in Nd-Fe-B Magnets: A Micromagnetic Study of Grain Alignment Effect. 2026 International Symposium on Advanced Magnetic Materials and Applications (ISAMMA 2026). 2026 招待講演
  3. LARSEN, Simon, TERADA, Noriki, MAMIYA, Hiroaki, TANG, Xin, SEPEHRI AMIN, Hossein, D. Okuyama, H. Saito, T. Nakajima. Controlling the Interslab Magnetic Interactions in the Gd5Ge4 Family of Magnetocaloric Compounds. 30th International Cryogenic Engineering Conference/International Cryogenic Materials Conference 2026. 2026
  4. PARK, Sang Jun, GAUTAM, Ravi, Abdulkareem Alasli, HIRAI, Takamasa, ANDO, Fuyuki, Hosei Nagano, SEPEHRI AMIN, Hossein, UCHIDA, Kenichi. High-Throughput Discovery of Disorder-Engineered Transverse Thermoelectric Materials for Energy Harvesting. MRS Spring Meeting 2026. 2026
  5. ANDO, Fuyuki, 安立 裕人, SEPEHRI AMIN, Hossein, HIRAI, Takamasa, 平田 圭佑, UCHIDA, Kenichi. Investigation of the Nernst effect emerging around the Curie temperature. 第73回応用物理学会春季学術講演会. 2026
  6. 高橋 有紀子, 田村 亮, 長尾 浩子, キューレッシュ ニキーター, 小川 大介, セペリ アミン ホセイン, 吉川 英樹, 佐々木 悠太, 葛西 伸哉, 松田 翔一. データ駆動によるFePtグラニュラー薄膜の最適化. 金属学会春季(第178回)講演大会. 2026 招待講演
2025
  1. 高橋 有紀子, セペリ アミン ホセイン, 大久保 忠勝. NIMSでの希土類磁石研究. 2025BMシンポジウム「高性能軟磁性材料の開発とパワエレへの応用及び高性能永久磁石材料の開発とモータへの応用」. 2025 招待講演
  2. SEPEHRI AMIN, Hossein. Development of magnetic materials for green energy conversions. RICAM Workshop 4, Magnetic Materials Modeling. 2025 招待講演 Open Access
  3. SEPEHRI AMIN, Hossein. Development of magnetic materials for green energy conversions. The 11th Southeast Asia Collaborative Symposium on Energy Materials (SACSEM 2025) . 2025 招待講演 Open Access
  4. イ イェビン, 安藤 冬希, 平井 孝昌, Rajkumar Modak, セペリ アミン ホセイン, 内田 健一. 人工傾斜型積層体における無磁場下でのハイブリッド横型磁気熱電変換の実証. 第22回日本熱電学会学術講演会（TSJ2025）. 2025
  5. MAMIYA, Hiroaki, 熊田 高之, 篠原 武尚, GAUTAM, Ravi, SEPEHRI AMIN, Hossein. Deep Magnetic Structural Analyses within Soft Magnetic Materials Using Neutrons. 第49回 日本磁気学会学術講演会. 2025
  6. MODAK, Rajkumar, SEPEHRI AMIN, Hossein, SAKURABA, Yuya, ZHOU, Weinan, UCHIDA, Kenichi. Large anomalous Nernst conductivity in Pt2CoNi permanent magnet films with high in-plane and out-of-plane coercivities. 第86回応用物理学会秋季学術講演会. 2025
  7. 坂本 結衣, 安藤 冬希, 平井 孝昌, セペリ アミン ホセイン, 伊藤 圭吾, 内田 健一. 超伝導Pb-Fe複合物質における不揮発性磁気熱スイッチングの観測. 第86回応用物理学会秋季学術講演会. 2025
  8. 伊藤 圭吾, 安藤 冬希, セペリ アミン ホセイン, 坂本 結衣, 平井 孝昌, 渡邊 雄翔, 水口 佳一, 内田 健一. 超伝導Sn/Pb多層複合材料における不揮発性磁気熱スイッチングの微細構造形成による制御. 第86回応用物理学会秋季学術講演会. 2025
  9. CUSTANCE, Oscar, Manuel Gonzalez-Lastre, Kyungmin Kim, Estefania. Fernandez-Villanueva, Pablo Pou, Masayuki abe, SEPEHRI AMIN, Hossein, KAWAI, Shigeki, Maria Veronica Ganduglia-Pirovano, Ruben Perez. Identifying Ce3+ Sites at the CeO2 (111) Surface with Water and AFM Imaging. The 26th International Conference on Non-contact Atomic Force Microscopy (NC-AFM 2025). 2025
  10. ムニ バースカル シヴァ クマール, SASAKI, Taisuke, Ryogen Fujiwara, SEPEHRI AMIN, Hossein, Mio Ohtsuru, Yoshinori Fujikawa, OHKUBO, Tadakatsu. Novel approach to fabricate Sm-Co micro-magnets and its microstructure. The 28th International Workshop on Rare Earth and Future Permanent Magnets and Their Applications (REPM2025). 2025
  11. SEPEHRI AMIN, Hossein, KULESH, Nikita, ZHANG, Jiasheng, KAUTSAR, Zulfa Hilmi, BOLYACHKIN, Anton, TANG, Xin, H. Nakamura, OHKUBO, Tadakatsu, HONO, Kazuhiro. Recent advances in the development of high-performance HRE-free and RE-lean permanent magnets. The 28th International Workshop on Rare Earth and Future Permanent Magnets and Their Applications (REPM2025). 2025 招待講演 Open Access
  12. BOLYACHKIN, Anton, TANG, Xin, KULESH, Nikita, SEPEHRI AMIN, Hossein. Micromagnetic Simulations of Hot-deformed Nd-Fe-B Magnets Subjected to Eutectic Grain Boundary Diffusion Process. The 28th International Workshop on Rare Earth and Future Permanent Magnets and Their Applications (REPM2025). 2025
  13. KULESH, Nikita, BOLYACHKIN, Anton, TANG, Xin, Nakamura H., OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein. Deep-learning-assisted micromagnetic model development for Ga-doped Nd-Fe-B magnet. The 28th International Workshop on Rare Earth and Future Permanent Magnets and Their Applications (REPM2025). 2025
  14. LEE, Yebin, ANDO, Fuyuki, HIRAI, Takamasa, Rajkumar Modak, SEPEHRI AMIN, Hossein, UCHIDA, Kenichi. Giant transverse thermoelectric conversion by zero-field hybridization of anomalous Nernst and off-diagonal Seebeck effects. The 41st International and 7th Asian Conference on Thermoelectrics (ICT/ACT 2025). 2025
  15. BOLYACHKIN, Anton, SUBAGJA, Toni, KULESH, Nikita, TANG, Xin, OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein. The Status of SmFe12-based Alloys: Employing Machine Learning for Optimization. 7th International Conference of Asian Union of Magnetics Societies (IcAUMS 2025). 2025 招待講演
  16. LEE, Yebin, ANDO, Fuyuki, HIRAI, Takamasa, Rajkumar Modak, SEPEHRI AMIN, Hossein, UCHIDA, Kenichi. Zero-field hybridization of anomalous Nernst and off-diagonal Seebeck effects in artificially tilted multilayers. 第72回応用物理学会春季学術講演会. 2025
  17. TANG, Xin, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Development of High-Performance Nd-Fe-B Based Magnet: Combating Materials Criticality. The 16th Joint MMM-Intermag Conference (The 16th Joint Conference on Magnetism and Magnetic Materials and Intermag). 2025 招待講演
2024
  1. LARSEN, Simon, TERADA, Noriki, MAMIYA, Hiroaki, TANG, Xin, SEPEHRI AMIN, Hossein, Y. Nambu, D. Okuyama. Magnetic structures of transition metal substituted ErCo2. 日本中性子科学会 第24回年会 (JSNS 2024). 2024
  2. 間宮 広明, 寺田 典樹, ラーセン サイモン ローゼンクビスト, 篠原 武尚, セペリ アミン ホセイン. マルチサンプル中性子透過分光法による極低温磁気冷凍材料のハイスループット評価. 日本中性子科学会第24回年会. 2024
  3. SEPEHRI AMIN, Hossein, GAUTAM, Ravi, S. Hiramoto, BOLYACHKIN, Anton, KULESH, Nikita, MAMIYA, Hiroaki, S. Okamoto, OHKUBO, Tadakatsu. Effect of nanostructure on the core loss of soft magnetic materials. The 48th Annual Conference on Magnetics in Japan（第48回日本磁気学会学術講演会）. 2024 招待講演 Open Access
  4. BOLYACHKIN, Anton, SUBAGJA, Toni, LI, Jiangnan, ZHANG, Jiasheng, ASHOK KRISHNASWAMY, Srinithi, ABE, Taichi, TANG, Xin, TOZMAN KARANIKOLAS, Pelin, KULESH, Nikita, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Machine Learning Assisted Optimization of SmFe12-based Alloys. IEEE Magnetic Frontiers 2024. 2024 Open Access
  5. SEPEHRI AMIN, Hossein. High Performance Permanent Magnets; How to solve element criticality while considering new demands?. IEEE Magnetic Frontiers Conference 2024. 2024 招待講演 Open Access
  6. HIROTO, Takanobu, SEPEHRI AMIN, Hossein, 上村 直樹, HAYAMI, Wataru, OHKUBO, Tadakatsu, 荻津 格, 曽我 公平, KIMURA, Kaoru. LATTICE EXPANSITON DUE TO HYDROGEN ABSORPTION INTO THE RHOMBOHEDRAL BORON. 22nd INTERNATIONAL SYMPOSIUM ON BORON, BORIDES AND RELATED MATERIALS (ISBB2024). 2024
  7. TANG, Xin, WANG Zexuan, BOLYACHKIN, Anton, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Magnetocaloric materials for cryogenic application. 10th IIR Conference on Caloric Cooling and Applications of Caloric Materials (THERMAG 2024). 2024 招待講演 Open Access
  8. BOLYACHKIN, Anton, DENGINA Ekaterina, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Coercivity Engineering in Nd-Fe-B Hot-deformed Magnets by Grain Boundary Infiltration: Micromagnetic Viewpoint. The 5th International Symposium on Advanced Magnetic Materials and Applications (ISAMMA2024). 2024 Open Access
  9. SEPEHRI AMIN, Hossein. Design and development of permanent magnets; how to solve rare-earth criticality while considering new demands?. The 5th International Symposium on Advanced Magnetic Materials and Applications (ISAMMA 2024). 2024 招待講演 Open Access
  10. GAUTAM, Ravi, HIRAI, Takamasa, Alasli Abdulkareem, Hosei Nagano, OHKUBO, Tadakatsu, UCHIDA, Kenichi, SEPEHRI AMIN, Hossein. Large transverse thermoelectric conversion by nanostructure-engineered spin-caloritronic amorphous alloy. International Conference on Magnetism 2024. 2024
  11. MADAVALI, Babu, ANDO, Fuyuki, UCHIDA, Kenichi, SEPEHRI AMIN, Hossein. Systematic investigation of transverse thermoelectric properties in rare earth permanent magnets. International Conference on thermoelectrics. 2024
  12. LARSEN, Simon, TERADA, Noriki, TANG, Xin, SEPEHRI AMIN, Hossein, MAMIYA, Hiroaki, Yusuke Nambu. The influence of doping on the magnetic and atomic structures of the magnetocaloric material ErCo2. International conference on Magnetism 2024 (The 22nd International Conference on Magnetism). 2024
  13. ANDO, Fuyuki, HIRAI, Takamasa, Abdulkareem Alasli, SEPEHRI AMIN, Hossein, IWASAKI, Yutaka, 長野 方星, UCHIDA, Kenichi. Giant transverse thermoelectric generation in multifunctional composite permanent magnets. International Conference on Magnetism 2024. 2024 招待講演
  14. 有馬 寛人, Md. R. Kasem, セペリ アミン ホセイン, 安藤 冬希, 内田 健一, 木下 雄斗, 徳永 将史, 水口 佳一. 共晶合金Sn-Pbハンダにおける不揮発な磁気熱スイッチ現象. 日本物理学会2024年春季大会. 2024
2023
  1. 有馬 寛人, Md. R. Kasem, セペリ アミン ホセイン, 安藤 冬希, 内田 健一, 木下 雄斗, 徳永 将史, 水口 佳一. 共晶合金Sn-Pbハンダを用いた不揮発な磁気熱スイッチング. 第29回 渦糸物理ワークショップ2023. 2023
  2. ANDO, Fuyuki, HIRAI, Takamasa, SEPEHRI AMIN, Hossein, UCHIDA, Kenichi. Transverse Thermoelectric Generation Using Permanent Magnets. MRM2023/IUMRS-ICA2023. 2023 招待講演
  3. BOLYACHKIN, Anton, SEPEHRI AMIN, Hossein, DENGINA Ekaterina, KULESH, Nikita, TANG, Xin, TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, HONO, Kazuhiro. Digital twins of magnetic materials: revealing microstructure-properties correlations. The 11th Pacific Rim International Conference on Advanced Materials and Processing (PRICM 11). 2023 招待講演 Open Access
  4. SEPEHRI AMIN, Hossein. Machine learning science assisted development of FePt magnetic recording media. The international Disk Drive Equipment and Materials Association (IDEMA), Autumn Seminar. 2023 招待講演
  5. 安藤 冬希, 平井 孝昌, セペリ アミン ホセイン, 内田 健一. SmCo/BiSbTe傾斜積層体による横型熱電永久磁石の実証. 第20回日本熱電学会学術講演会. 2023
  6. 内田 健一, 平井 孝昌, セペリ アミン ホセイン. 人工傾斜型積層体におけるハイブリッド横型磁気熱電冷却. 第20回 日本熱電学会学術講演会. 2023
  7. 安藤 冬希, 平井 孝昌, セペリ アミン ホセイン, 内田 健一. SmCo/BiSbTe傾斜積層体による横型熱電永久磁石の実証. 第84回応用物理学会秋季学術講演会. 2023
  8. BOLYACHKIN, Anton, DENGINA Ekaterina, KULESH, Nikita, TANG, Xin, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Tomography-based Micromagnetic Simulations of Hot-Deformed Nd-Fe-B Magnets. JIMM Fall Meeting 2023. 2023 招待講演
  9. SEPEHRI AMIN, Hossein. Research on high-performance permanent magnet materials without using rare elements. The Japan Institute of Metals and Materials (JIMM) 2023 Fall Meeting. 2023 招待講演
  10. SEPEHRI AMIN, Hossein, SASAKI, Taisuke, OHKUBO, Tadakatsu, HONO, Kazuhiro. Correlative (S)TEM/APT analysis of magnetic materials for green energy conversions. Atom Probe Tomography & Microscopy 2023. 2023 招待講演
  11. BOLYACHKIN, Anton, DENGINA Ekaterina, KULESH, Nikita, TANG, Xin, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Tomography-based Micromagnetic Simulations of Nd-Fe-B Magnets: the Role of Intergranular Phase Nonuniformities. 27th International workshop on rare earth and future permanent magnets and their applications (REPM). 2023 Open Access
  12. SEPEHRI AMIN, Hossein, Y. Mori, BOLYACHKIN, Anton, TAKAHASHI, Yukiko, OHKUBO, Tadakatsu, HONO, Kazuhiro, T. Shima. Exploring coercivity limit in SmFe12-based thin films . REPM 2023 BIRMINGHAM. 2023 招待講演
  13. KULESH, Nikita, BOLYACHKIN, Anton, DENGINA Ekaterina, TANG, Xin, OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. Exploring coercivity limits in ultrafine-grained Nd-Fe-B magnets with deep learning image segmentation and micromagnetic simulation. 27th International workshop on rare earth and future permanent magnets and their applications (REPM). 2023
  14. SEPEHRI AMIN, Hossein, TANG, Xin, ZHANG, Jiasheng, BOLYACHKIN, Anton, OHKUBO, Tadakatsu, HONO, Kazuhiro. Development of high performance permanent magnets; elements criticality, new demands, and extrinsic magnetic properties. 13th Joint European Magnetic Symposia (JEMS). 2023 招待講演 Open Access
  15. SEPEHRI AMIN, Hossein, TANG, Xin, ZHANG, Jiasheng, BOLYACHKIN, Anton, OHKUBO, Tadakatsu, HONO, Kazuhiro. Development of High-Performance Permanent Magnets without Reliance on Scarce Elements. IcAUMS 2023. 2023 招待講演
  16. BOLYACHKIN, Anton, DENGINA Ekaterina, KULESH, Nikita, TANG, Xin, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Tomography-based Micromagnetic Simulations of Nd-Fe-B Hot-Deformed Magnets. 13th International Symposium on Hysteresis Modeling and Micromagnetics (HMM 2023). 2023 Open Access
  17. BOLYACHKIN, Anton, DENGINA Ekaterina, KULESH, Nikita, TANG, Xin, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Tomography-based Digital Twins of Nd-Fe-B Magnets for Micromagnetic Simulations. INTERMAG 2023. 2023
  18. BOLYACHKIN, Anton, DENGINA Ekaterina, KULESH, Nikita, TANG, Xin, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. Digital Twins of Nd-Fe-B Magnets: Tomography-Based Micromagnetic Simulations. 第1回マテリアル革新力強化に向けた総合シンポジウム. 2023
2022
  1. SEPEHRI AMIN, Hossein, TANG, Xin, LAI, Jiawei, SAITO, Akiko, OHKUBO, Tadakatsu, HONO, Kazuhiro. Magnetic refrigerant materials for AMRR for hydrogen liquefaction (JST-Mirai) -Giant magnetocaloric materials with small hysteresis-. 第104回 低温工学・超電導学会研究発表会. 2022
  2. SEPEHRI AMIN, Hossein, TANG, Xin, LAI, Jiawei, BOLYACHKIN, Anton, OHKUBO, Tadakatsu, HONO, Kazuhiro. Development of Magnetic Refrigeration Materials for Cryogenic Applications. 2022 MRS Fall Meeting & Exhibit. 2022 招待講演
  3. TOZMAN KARANIKOLAS, Pelin, SEPEHRI AMIN, Hossein, ABE, Taichi, BOLYACHKIN, Anton, Fukazawa Taro, Miyake Takashi, HIROSAWA, Satoshi, HONO, Kazuhiro, TAKAHASHI, Yukiko. The role of V on the Magnetic Properties of Sm(Fe,V)12 compounds. 日本電子材料技術協会 2022年度第59回秋期講演大会. 2022
  4. TOZMAN KARANIKOLAS, Pelin, SEPEHRI AMIN, Hossein, ABE, Taichi, BOLYACHKIN, Anton, Taro Fukazawa, Takashi Miyake, HIROSAWA, Satoshi, HONO, Kazuhiro, TAKAHASHI, Yukiko. Investigation of the effect of V on the intrinsic and extrinsic magnetic properties of Sm(Fe,V)12 by model thin film. The 67th Annual Conference on Magnetism and Magnetic Materials (MMM 2022) . 2022 招待講演
  5. SEPEHRI AMIN, Hossein, ZHANG, Jiasheng, TANG, Xin, ASHOK KRISHNASWAMY, Srinithi, TOZMAN KARANIKOLAS, Pelin, BOLYACHKIN, Anton, OHKUBO, Tadakatsu, HONO, Kazuhiro. Development of rare-earth lean SmFe12-based permanent magnets. The 67th Annual Conference on Magnetism and Magnetic materials (MMM 2022). 2022 招待講演
  6. BOLYACHKIN, Anton, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu. Data-Driven Development of Magnetic Materials. The 238th Topical Symposium of the Magnetics Society of Japan. 2022 招待講演 Open Access
  7. KULESH, Nikita, BOLYACHKIN, Anton, SUZUKI, Ippei, TAKAHASHI, Yukiko, SEPEHRI AMIN, Hossein. Deep learning TEM image segmentation for automated microstructural analysis of FePt-C recording media. 日本金属学会　2022年秋季（第171回）講演大会. 2022
  8. BOLYACHKIN, Anton, LAI, Jiawei, DENGINA Ekaterina, TERADA, Noriki, DIEB, Sae, TANG, Xin, OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. Machine learning assisted development of Fe2P-type magnetocaloric compounds for cryogenic applications. 日本金属学会 2022年秋期第171回講演大会　JIM Autumn Meeting. 2022
  9. KULESH, Nikita, BOLYACHKIN, Anton, SUZUKI Issei, TAKAHASHI, Yukiko, SEPEHRI AMIN, Hossein. U-Net image segmentation for statistical analysis of granular FePt recording media and automated dataset generation. The 46th Annual Conference on MAGUNETICS in Japan. 2022
  10. SEPEHRI AMIN, Hossein, BOLYACHKIN, Anton, DENGINA Ekaterina, TAKAHASHI, Yukiko, HONO, Kazuhiro. Machine Learning Approach for Evaluation of Nanodefects and Magnetic Anisotropy in FePt granular media. The 33rd Magnetic Recording Conference (TMRC 2022) . 2022 招待講演
  11. SUTO, Hirofumi, ASAM, Nagarjuna, 田丸 慎吾, SEPEHRI AMIN, Hossein, BOLYACHKIN, Anton, ZHOU, Weinan, NAKATANI, Tomoya, 久保田 均, SAKURABA, Yuya. Analysis of a spin-torque oscillator using injection locking to an external microwave field. 24th International Colloquium on Magnetic Films and Surfaces (ICMFS2022) https://icmfs2022.jp/. 2022
  12. MODAK, Rajkumar, SAKURABA, Yuya, HIRAI, Takamasa, Yagi Takashi, SEPEHRI AMIN, Hossein, ZHOU, Weinan, Masuda Hiroto, SEKI Takeshi, Takanashi Koki, OHKUBO, Tadakatsu, UCHIDA, Kenichi. SM-CO-BASED AMORPHOUS ALLOY FILMS FOR ZERO-FIELD TRANSVERSE THERMOELECTRIC GENERATION. 24th International Colloquium on Magnetic Films and Surfaces (ICMFS-2022). 2022
  13. MODAK, Rajkumar, SAKURABA, Yuya, HIRAI, Takamasa, Takashi Yagi, SEPEHRI AMIN, Hossein, Hiroto Masuda, 関 剛斎, Koki Takanashi, ZHOU, Weinan, OHKUBO, Tadakatsu, UCHIDA, Kenichi. Sm-Co-based amorphous alloy films for zero-field transverse thermoelectric generation. 2022年 第69回応用物理学会春季学術講演会. 2022
  14. TOZMAN KARANIKOLAS, Pelin, FUKAZAWA Taro, OGAWA, Daisuke, SEPEHRI AMIN, Hossein, BOLYACHKIN, Anton, MIYAKE Takahashi, HIROSAWA, Satoshi, HONO, Kazuhiro, TAKAHASHI, Yukiko. The Curie temperature enhancement and anisotropy preservation in SmFe12-xVx compounds by V substitution. 日本金属学会 2022年春期第170回講演大会. 2022
2021
  1. TOZMAN KARANIKOLAS, Pelin, Taro Fukazawa, OGAWA, Daisuke, SEPEHRI AMIN, Hossein, BOLYACHKIN, Anton, Takeshi Miyake, HIROSAWA, Satoshi, HONO, Kazuhiro, TAKAHASHI, Yukiko. Understanding the Effect of V on the Intrinsic Magnetic Properties of Sm(Fe,V)12 for Permanent Magnet Applications. 24th International Colloquium on Magnetic Films and Surfaces (ICMFS-2022) https://icmfs2022.jp/. 2021 招待講演
  2. MODAK, Rajkumar, SAKURABA, Yuya, HIRAI, Takamasa, Yagi Takashi, SEPEHRI AMIN, Hossein, Masuda Hiroto, SEKI Takeshi, Takanashi Koki, ZHOU, Weinan, OHKUBO, Tadakatsu, UCHIDA, Kenichi. Combinatorial investigation of Sm-Co-based amorphous alloy films for zero-field transverse thermoelectric generation. Symposium on Magnetism and Spintronics (SMS-2021). 2021
  3. 首藤 浩文, アサム ナガルシュナ, 田丸　慎吾, セペリ アミン ホセイン, ボリャーチキン アントーン, 中谷 友也, 周 偉男, 久保田 均, 桜庭 裕弥. マイクロ波磁界印加によるinjection lockingを利用した スピントルク発振素子の磁化ダイナミクス解析. 磁気記録・情報ストレージ研究会（MRIS） https://www.ieice.org/ken/program/index.php?tgs_regid=6347033ba7e2cf709429158c719c1c41328bf92a66c8a0cac8b7b5c1a9b99ca8&tgid=IEICE-MRIS. 2021
  4. 平井 孝昌, セペリ アミン 那仁, 長谷川 顕登, 小山 知弘, 井口 亮, 大久保 忠勝, 千葉 大地, 内田 健一. Mechanical cooling-heating switching of anisotropic magneto-Peltier effect. 2021年第82回応用物理学会 秋季学術講演会 (https://meeting.jsap.or.jp/). 2021
  5. ASHOK KRISHNASWAMY, Srinithi, SEPEHRI AMIN, Hossein, TAKAGIWA, Yoshiki, HONO, Kazuhiro. Microstructure of high power-factor p-type Al-Fe-Si thermoelectric materials. JIM Autumn Meeting 2021　　日本金属学会2021年秋期(第169回)講演大会. 2021
  6. BOLYACHKIN Anton, LI Jiangnan, ASHOK KRISHNASWAMY Srinithi, ZHANG Jiasheng, TANG Xin, TOZMAN KARANIKOLAS Pelin, SEPEHRI AMIN Navid, OHKUBO Tadakatsu, HONO Kazuhiro. Compositional optimization of SmFe12-based alloys accelerated by machine learning. 日本金属学会2021年秋期（第169回）講演大会　JIM Autumn Meeting. 2021
  7. 平井 孝昌, セペリ アミン 那仁, 長谷川 顕登, 小山 知弘, 井口 亮, 大久保 忠勝, 千葉 大地, 内田 健一. Mechanical cooling-heating switching of anisotropic magneto-Peltier effect. 2021年第82回応用物理学会 秋季学術講演会. 2021 招待講演
  8. 首藤 浩文, アサム ナガルシュナ, 田丸　慎吾, セペリ アミン ホセイン, ボリャーチキン アントーン, 周 偉男, 中谷 友也, 久保田 均, 桜庭 裕弥. マイクロ波磁界印加によるinjection lockingを利用したスピントルク発振素子の磁化ダイナミクス解析. 第45回日本磁気学会学術講演会. 2021
  9. 首藤 浩文, アサム ナガルシュナ, 田丸 慎吾, セペリ アミン 那仁, ボリャーチキン アントーン, 中谷 友也, 周 偉男, 久保田 均, 桜庭 裕弥. Analysis of a spin-torque oscillator using injection locking to an external microwave field. The 32nd Magnetic Recording Conference (TMRC2021). 2021 招待講演
  10. SEPEHRI AMIN Navid, ZHOU Weinan, SAKURABA Yuya, C. Abert, D. Suess, HONO Kazuhiro. Realizing oscillation of all-in-plane spin-torque-oscillator for microwave assisted magnetic recording. the 2021 IEEE/ASME International Conference on Advanced Intelligent Mechatronics （AIM 2021）. 2021
  11. SEPEHRI AMIN Navid, DIRBA Imants, TANG Xin, ASHOK KRISHNASWAMY Srinithi, OHKUBO Tadakatsu, HONO Kazuhiro. Development of high coercivity SmFe12-based permanent magnets. the 2021 IEEE/ASME International Conference on Advanced Intelligent Mechatronics （AIM2021）. 2021 招待講演
  12. SEPEHRI AMIN Navid, LI Jiangnan, TANG Xin, OHKUBO Tadakatsu, HONO Kazuhiro. On the temperature-dependent coercivities of anisotropic Nd-Fe-B magnets. The 26th International Workshop on Rare Earth and Future Permanent Magnets and Their Applications （REPM2021）. 2021 招待講演
  13. アサム ナガルシュナ, 首藤 浩文, Tamaru Shingo, セペリ アミン ホセイン, 中谷 友也, 周 偉男, Hitoshi Kubota, 桜庭 裕弥. Characterizing the oscillation frequency of a spin-torque oscillator (STO) by measuring the change of dc resistance upon injection locking to an external RF magnetic field. INTERMAG2021　/　https://intermag.org . 2021
  14. 中谷 友也, ラスリー コーダリー エルデソウキー マーモウド, 李 江南, セペリ アミン ホセイン, 介川 裕章, 桜庭 裕弥. Tunnel magnetoresistance sensors with CoFeBTa amorphous soft-magnetic sensing layer. INTERMAG 2021. 2021
  15. TOZMAN KARANIKOLAS Pelin, SEPEHRI AMIN Hossein, OHKUBO Tadakatsu, HONO Kazuhiro. Tuning magnetic properties SmFe12-based compounds by substituting Sm with M=Gd,Y and Zr. 日本金属学会 2021年春期 第168回講演大会. 2021
  16. 平井 孝昌, セペリ アミン ホセイン, 長谷川 顕登, 小山 知弘, 井口 亮, 大久保 忠勝, 千葉 大地, 内田 健一. Strain-induced switching of cooling-heating generated by anisotropic magneto-Peltier effect. 2021年第68回応用物理学会 春季学術講演会. 2021
  17. ASHOK KRISHNASWAMY Srinithi, SEPEHRI AMIN Hossein, TANG Xin, TOZMAN KARANIKOLAS Pelin, Shintaro Kobayashi, Tetsuya Nakamura, OHKUBO Tadakatsu, HONO Kazuhiro. Microstructure engineering towards realizing coercivity in SmFe12-based permanent magnets. 日本金属学会 2021年春期 第168回講演大会. 2021
  18. TOZMAN KARANIKOLAS Pelin, SEPEHRI AMIN Hossein, OHKUBO Tadakatsu, HONO Kazuhiro. Searching Potential Candidates for the Next Generation Sustainable High Performance Permanent Magnets. MANA International Symposium 2021 jointly with ICYS. 2021 招待講演
2020
  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. Nd-Fe-B系磁石の微結晶化による磁石特性の改善. 電気学会研究会　マグネティックス研究会 https://workshop.iee.or.jp/sbtk/cgi-bin/sbtk-showprogram.cgi?workshopid=SBW00006F97 . 2020 招待講演
  2. LI, Jiangnan, OHKUBO, Tadakatsu, HONO, Kazuhiro, TANG, Xin, SEPEHRI AMIN, Hossein, Development of high coercivity Nd-Fe-B permanent magnets with improved thermal stability. The 44th Annual Conference on Magnetics in Japan. 2020 招待講演
  3. ラスリー コーダリー エルデソウキー マーモウド, 中谷 友也, 李 江南, セペリ アミン ホセイン, 介川 裕章, 桜庭 裕弥. CoFeBTaアモルファス軟磁性層を用いたTMRセンサ. 第44回日本磁気学会学術講演会. 2020
  4. 高橋 有紀子, 小川 大介, セペリ アミン ホセイン, 嶋敏之, 大久保 忠勝, 廣澤 哲, 宝野 和博. Prospect of 1-12 based permanent magnets ~ Demonstration of high coercivity in thin films and current status of 1-12 bulk magnet~. 第44回　日本磁気学会学術講演会. 2020 招待講演
  5. SEPEHRI AMIN, Hossein, Y. Tamazawa, M. Kambayashi, G. Saito, TAKAHASHI, Yukiko, OGAWA, Daisuke, OHKUBO, Tadakatsu, HIROSAWA, Satoshi, M. Doi, T. Shima, HONO, Kazuhiro. Recent advances in SmFe12-based hard magnetic materials. The 2020 Magnetism and Magnetic Materials Conference (MMM2020). 2020 招待講演
  6. SAKURABA, Yuya, ZHOU, Weinan, ASAM, Nagarjuna, SEPEHRI AMIN, Hossein, NAKATANI, Tomoya, HONO, Kazuhiro. Investigation of spin-torque induced magnetization dynamics in all-in-plane spin-torque oscillator . Digests of The 31st Magnetic Recording Conference - TMRC 2020 -. 2020 招待講演
  7. TOZMAN KARANIKOLAS, Pelin, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. The effect of Gd on phase stability and magnetic properties in SmFe12-based compounds . 日本金属学会2020年春期講演大会 The Japan Institute of Metals and Materials 2020 Annual Spring. 2020
  8. 三浦 飛鳥, セペリ アミン ホセイン, 増田 啓介, 土浦 宏紀, 三浦 良雄, 井口 亮, 桜庭 裕弥, 塩見 淳一郎, 宝野 和博, 内田 健一. 永久磁石における異常エッチングスハウゼン効果の観測. 第67回 応用物理学会春季学術講演会. 2020
  9. TOZMAN KARANIKOLAS, Pelin, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. The effect of M = Gd, Zr on phase stability and intrinsic magnetic properties in (Sm0.8M0.2)(Fe0.8Co0.2)12-xTix. The 13th MANA International Symposium 2020 jointly with ICYS. 2020
2019
  1. TAKAHASHI, Yukiko, SUZUKI, Ippei, WANG, Jian, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. Microstructure control of FePt-based HAMR media. TMRC. 2019 招待講演
  2. TOZMAN KARANIKOLAS, Pelin, SEPEHRI AMIN, Hossein, TAKAHASHI, Yukiko, OGAWA, Daisuke, HIROSAWA, Satoshi, HONO, Kazuhiro. The Effect of Zr in Progress toward the Development of High-Performance SmFe12-based Magnet. 64th Annual Conference on Magnetism and Magnetic Materials (2019 MMM). 2019
  3. ZHOU, Weinan, 谷口 友大, SEPEHRI AMIN, Hossein, KASAI, Shinya, 田丸 慎吾, SAKURABA, Yuya, 久保田 均, HONO, Kazuhiro. Inducing out-of-plane precession of magnetization for microwave-assisted magnetic recording with an oscillating polarizer in a spin-torque oscillator. 第43回日本磁気学会学術講演会. 2019
  4. DIRBA Imants, OHKUBO, Tadakatsu, SEPEHRI AMIN, Hossein, HONO, Kazuhiro. Grain size reduction of SmFe12-based powders; toward development of bulk high-performance permanent magnet. The 43rd Annual Conference on Magnetics in Japan. 2019
  5. SEPEHRI AMIN, Hossein, ZHOU, Weinan, SAKURABA, Yuya, HONO, Kazuhiro. Realizing oscillation of all-in-plane spin-torque-oscillator for microwave assisted magnetic recording. The 80th Japan Society of Applied Physics-Autumn meeting 2019. 2019
  6. WANG, Jian, SUZUKI, Ippei, SEPEHRI AMIN, Hossein, TAKAHASHI, Yukiko, HONO, Kazuhiro. Nanostructure optimization of FePt-X based HAMR media: reduction of grain size and in-plane components. 「国際ディスクフォーラム」 IDEMA JAPAN. 2019 招待講演
  7. ZHOU, Weinan, SEPEHRI AMIN, Hossein, 谷口知大, 田丸慎吾, KASAI, Shinya, 久保田均, SAKURABA, Yuya, HONO, Kazuhiro. All-in-plane spin-torque oscillator for microwave-assisted magnetic recording. The 30th Magnetic Recording Conference (TMRC 2019). 2019 招待講演
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 招待講演
  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. 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
  4. 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
  5. セペリ アミン ホセイン, A. Taubel, 大久保 忠勝, K. P. Skokov, O. Gutfleisch, 宝野 和博. 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 招待講演
  7. XU, Xiandong, SASAKI, Taisuke, マルコ ソダーツニク, SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, HONO, Kazuhiro. 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
  8. 李 江南, リユウ リフア, セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. Micromagnetic studies on the coercivity of heavy rare-earth diffusion processed Nd-Fe-B hot-deformed magnets. REPM2018. 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 招待講演
  11. セペリ アミン ホセイン, タン シン, リユウ リフア, トズマン カラニコラス ペリン, ディルバ イマンツ, 大久保 忠勝, 宝野 和博. Development of high performance permanent magnets without reliance on scarce elements. Future Perspectives on Novel Magnetic Materials. 2018 招待講演
  12. トズマン カラニコラス ペリン, セペリ アミン ホセイン, 高橋 有紀子, 廣澤 哲, 宝野 和博. 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. 周 偉男, セペリ アミン ホセイン, 桜庭 裕弥, 葛西 伸哉, ボス スボロジャテイ, 宝野 和博. Spin torque oscillator with in-plane magnetized spin-injection layer for microwave assisted magnetic recording. Intermag 2018. 2018
  14. セペリ アミン ホセイン, C. Abert, D. Suess, 宝野 和博. Design of field generating layer in all-in-plane spin-torque-oscillator. Intermag2018. 2018
  15. 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
  16. WANG, Jian, SEPEHRI AMIN, Hossein, TAKAHASHI, Yukiko, 田尻 寛男, 中村 哲也, 伊奈稔哲, 宇留賀 朋哉 SPring-8, 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. 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. 62nd Annual Conference on Magnetism and Magnetic Materials. 2017
  2. タン シン, セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. High performance Ce-substituted Nd-Fe-B hot-deformed magnets. 62nd conference on magnetism and magnetic materials. 2017
  3. 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 招待講演
  4. 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 招待講演
  5. 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
  6. 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 招待講演
  7. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. 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 招待講演
  8. セペリ アミン ホセイン, ボス スボロジャテイ, C. Abert, 桜庭 裕弥, 葛西 伸哉, 林 将光, D. Suess, 宝野 和博. Design and development of spin-torque-oscillator for microwave assisted magnetic recording. TMRC 2017,The 28th Magnetic Recording Conference. 2017 招待講演
  9. 王 建, セペリ アミン ホセイン, 高橋 有紀子, 宝野 和博. Origin of in-plane component for L10-FePt granular films deposited on MgO single crystal substrate. The 28th Magnetic Recording Conference (TMRC 2017). 2017 招待講演
  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. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. Dy-free high coercivity Nd-Fe-B permanent magnets. The 4th NIMS-Taiwan MOST workshop. 2017 招待講演
  12. 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. Microstructure and coercivity of Sm2(Co,Fe,Cu,Zr)17 type sintered magnets. 3N-Lab Workshop on Permanent Magnets. 2017 招待講演
  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 招待講演
  14. 大久保 忠勝, セペリ アミン ホセイン, 宝野 和博. NdFeB磁石の微細組織と磁気特性. CDMSI International Workshop. 2017 招待講演
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 招待講演
  2. セペリ アミン ホセイン, H. Iwama, G. Hrkac, T. Shima, 宝野 和博. Surface Segregation of Pt in L10-FePt Nano-grains. 61st Annual Conference on Magnetism and Magnetic Materials. 2016
  3. 王 建, 高橋 有紀子, セペリ アミン ホセイン, 宝野 和博. 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. セペリ アミン ホセイン, ボス スボロジャテイ, 桜庭 裕弥, 林 将光, T. Schrefl, C. Abert, D. Suess, 宝野 和博. Reduction of Critical Current Density in Spin-Torque-Oscillator Device for Microwave Assisted Magnetic Recording . 61st Annual Conference on Magnetism and Magnetic Materials. 2016
  5. 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 . 61st Annual Conference on Magnetism and Magnetic Materials . 2016
  6. 王 建, セペリ アミン ホセイン, 高橋 有紀子, 宝野 和博. Development of FePt Based HAMR Media. ASTC review meeting. 2016
  7. 桜庭 裕弥, ボス スボロジャテイ, セペリ アミン ホセイン, 林 将光, 葛西 伸哉, 宝野 和博. マイクロ波アシスト磁気記録を目指した高スピン分極スピン注入層を用いたスピントルク発振素子の開発. 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. 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
  12. 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
  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. 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 24th International Workshop on Rare-Earth and Future Permane. 2016
  15. セペリ アミン ホセイン, I. Dirba, C. A. Schwobel, 大久保 忠勝, O. Gutfleisch, 宝野 和博. Design of nanocomposite Nd-Fe-B/Fe magnets using micromagnetic simualtion. REPM 16. 2016
  16. 高橋 有紀子, 王 建, パンディ ヒマンシュ, アラガサミー ペルーマル, セペリ アミン ホセイン, 宝野 和博. FePt-C granular film for heat assisted magnetic recording. 2016 International Conference of Asian Union of Magnetic Society. 2016 招待講演
  17. 宝野 和博, 佐々木 泰祐, セペリ アミン ホセイン, リュウ ジュン, 大久保 忠勝. Impact of atom probe tomography on the development of high coercivity Nd-Fe-B based magnets. SISS-18. 2016 招待講演
  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 招待講演
  19. 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. Multiscale characterizations on hot-deformed Nd-Fe-B magnets. APT&M 2016. 2016
  20. 宝野 和博, セペリ アミン ホセイン, 佐々木 泰祐, 大久保 忠勝. Dy-free high coercivity Nd-Fe-B permanent magnets. Summit of Materials Science 2016: SMS2016. 2016 招待講演
  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. 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
  23. 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 招待講演
  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. 宝野 和博, 佐々木 泰祐, セペリ アミン ホセイン, 大久保 忠勝. Dy-free high coercivity Nd-Fe-B permanent magnets. TMS2016 145th Annual Meeting & Exhibition. 2016 招待講演
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. セペリ アミン ホセイン, 宝野 和博, 佐々木 泰祐, 大久保 忠勝, 秋屋 貴博, リュウ ジュン, リユウ リフア. Dy-Free High Coercivity Nd-Fe-B Permanent Magnets. Materials Research Society (MRS). 2015 招待講演
  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 招待講演
  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 招待講演
  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. 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
  7. 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
  8. PANDEYHimanshu, WANG, Jian, 城山泰祐, VARAPRASADBollapragada, SEPEHRI AMIN, Hossein, TAKAHASHI, Yukiko, PerumalAragarsamy, HONO, Kazuhiro. Structural optimization of FePt-C nano granular films for HAMR recording. The 26th Magnetic Recording Conference (TMRC2015). 2015 招待講演
  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 招待講演
  10. 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, 宝野 和博. Multi-scale Characterization of Nd-Fe-B Permanent Magnets by FIB-SEM/TEM/3DAP. NIMS Conference 2015. 2015 招待講演
  11. セペリ アミン ホセイン, 大久保 忠勝, T. Schrefl, 宝野 和博. 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 招待講演
  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. セペリ アミン ホセイン, リユウ リフア, 大久保 忠勝, M. Yano, T. Shoji, A. Kato, 宝野 和博. Thermal stability of coercivity in grain boundary modified anisotropic hot-deformed Nd-Fe-B magnets. INTERMAG 2015. 2015 招待講演
  14. セペリ アミン ホセイン, 大久保 忠勝, T. Schrefl, 宝野 和博. 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 招待講演
  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. 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
  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. 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 招待講演
  19. 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
  20. 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 招待講演
  21. 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 招待講演
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 招待講演
  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 招待講演
  3. 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 招待講演
  4. 大久保 忠勝, セペリ アミン ホセイン, H. Yamamura, T. Saito, H. Iba, M. Ohnuma, 宝野 和博. 2次電池負極材料用アモルファスSiOのアトムプローブ解析. Atom Probe Tomography & Microscopy 2014. 2014
  5. 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. Atom probe tomography and electron microscopy study on hot-deformed Nd-Fe-B magnets. Atom Probe Tomography & Microscopy 2014. 2014
  6. 宝野 和博, 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, 服部篤, 日置敬子. Dy-free high coercivity Nd-Fe-B hot-deformed magnets. 15th Inter Conf on Rapidly Quenched & Metastable Materials (RQ15. 2014 招待講演
  7. 宝野 和博, 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, 日置敬子, 服部篤. Dy-free high coercivity Nd-Fe-B hot-deformed magnets. REPM2014. 2014 招待講演
  8. SEPEHRI AMIN, Hossein. Anisotropy inducement mechanism in hydrogen disproportionation desorption recombination (HDDR) processed Nd-Fe-B powders. Rare Earth Permanent Magnets and Their Applications (REPM2014). 2014
  9. セペリ アミン ホセイン, リュウ ジュン, 秋屋 貴博, 大久保 忠勝, K. Hioki, A. Hattori, 宝野 和博. A multi-scale approach to develop high coercivity Dy-free permanent magnets. CIMTEC 2014, 6th Forum on New Materials. 2014 招待講演
  10. 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
  11. セペリ アミン ホセイン, リュウ ジュン, 大久保 忠勝, 宝野 和博. Microstructure and magnetic properties of Mn-X (X=Rh, Bi, Al) thin films. G8 Project Workshop. 2014 招待講演
  12. 宝野 和博, セペリ アミン ホセイン, 大久保 忠勝, 秋屋 貴博. Towards the development of Dy-free high coercivity Nd-Fe-B permanent magnets. IEEE International Magnetics Conference. 2014 招待講演
  13. 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 processed Nd-Fe-B powders. IEEE International Magnetics Conference (Intermag). 2014
  14. 宝野 和博, セペリ アミン ホセイン, 大久保 忠勝. Toward the development of Dy-free high coercivity Nd-Fe-B permanent magnets. Deutsche Physikalische Gesellschaft Frühjahrstagung. 2014 招待講演
  15. 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 招待講演
  16. 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
  17. 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 招待講演
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 招待講演
  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 招待講演
  4. 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. Microstructure evolution of hot-deformed Nd-Fe-B anisotropic magnets. 58th Annual Magnetism and Magnetic Materials Conference. 2013
  5. 秋屋 貴博, LiuLihua, 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. 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
  6. 大久保 忠勝, セペリ アミン ホセイン, 宝野 和博. Atom probe analyses of interfaces in Nd-Fe-B permanent magnets for higher coercivity. AVS 60th International Symposium & Exhibition. 2013 招待講演
  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 招待講演
  10. 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
  11. 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
  12. 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 招待講演
  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. 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
  15. 宝野 和博, セペリ アミン ホセイン, 大久保 忠勝. Toward the development of Dy-free high coercivity Nd-Fe-B permanent magnet. PRICM-8 - 2013. 2013 招待講演
  16. 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. Microstructure and coercivity relationships of hot-deformed Nd-Fe-B magnets . 12th Joint MMM/Intermag Conference. 2013
2012
  1. セペリ アミン ホセイン, D. Prabhu, 林 将光, 大久保 忠勝, K. Hioki, A. Hattori, 宝野 和博. Enhancement of coercivity in rapidly quenched Nd-Fe-B powders by the Nd-Cu diffusion process. ICAUMS 2012. 2012
  2. 大久保 忠勝, セペリ アミン ホセイン, 宝野 和博, Thomas Schrefl. THE ROLE OF GRAIN BOUNDARY PHASE ON THE MAGNETIZATION PROCESS OF ND-FE-B MAGNET. REPM 2012. 2012
  3. SEPEHRI AMIN, Hossein. Microstructure and coercivity of hot deformed Nd-Fe-B anisotropic magnets with non-magnetic grain boundary phase. Rare- Earth Permanent Magnets and Their Applications(REPM '12). 2012 招待講演
  4. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. Atom Probe Tomography of Nd-Fe-B Permanent Magnets. IFES2012. 2012
  5. 宝野 和博, セペリ アミン ホセイン, 大久保 忠勝. 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 招待講演
  6. セペリ アミン ホセイン, 大久保 忠勝, Masao Yano, Tetsuya Shoji, 宝野 和博. the International Magnetics Conference, INTERMAG 2012. the International Magnetics Conference, INTERMAG 2012. 2012
  7. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博, 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
2011
  1. 大久保 忠勝, セペリ アミン ホセイン, 宝野 和博, 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. セペリ アミン ホセイン, Yasuhiro Une, 大久保 忠勝, 宝野 和博, 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. 大久保 忠勝, セペリ アミン ホセイン, 宝野 和博. 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 招待講演
  4. セペリ アミン ホセイン, 大久保 忠勝, Toshiyuki SHIMA, 宝野 和博. Grain boundary and interface chemistry of a Dy-free Nd-Fe-B sintered magnet. The Magnetics Society of Japan (MSJ). 2011
  5. セペリ アミン ホセイン, Yasuhiro Une, 大久保 忠勝, 宝野 和博, Masato Sagawa. Microstructure of fine grained high coercivity Nd-Fe-B sintered magnet. The Magnetics Society of Japan (MSJ). 2011
  6. 大久保 忠勝, シュウ フイシン, セペリ アミン ホセイン, 西内武司, 広沢哲, 宝野 和博. 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
  7. 大久保 忠勝, セペリ アミン ホセイン, Y. Une, 宝野 和博, M. Sagawa. Microstructure of fine grained high coercivity Nd-Fe-B sintered magnet. InterMag 2011. 2011 招待講演
2010
  1. 宝野 和博, セペリ アミン ホセイン, 大久保 忠勝. Microstructure and coercivity relationships in permanent magnets for energy-efficient devices. 55th Annual Conference on Magnetism and Magnetic Materials. 2010 招待講演
  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. SEPEHRI AMIN, Hossein. Atom probe study on the grain boundary chemistry of Nd-Fe-B sintered magnets. REPM'10. 2010
  5. セペリ アミン ホセイン, 大久保 忠勝, Takeshi Nishiuchi, Satoshi Hirosawa, 宝野 和博. 3D atom probe investigation of the microstructure evelution during the HDDR process of Nd12.5Fe72.8Co8.0B6.5Ga0.2 powder. REPM’10. 2010
  6. 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. Grain boundary structure and chemistry of Dy-containing and Dy-diffused Nd-Fe-B sintered magnets. REPM'10. 2010 招待講演
  7. ラガハン ゴパラン, セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博, 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
  8. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. Microstructure and coercivity of Dy diffusion processed Nd-Fe-B sintered magnets. ISAMMA 2010. 2010
  9. SEPEHRI AMIN, Hossein. Quantitative laser atom probe analyses of hydrogenation-disproportionated Nd-Fe-B powders. IFES2010. 2010
  10. 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
  11. 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
  12. セペリ アミン ホセイン, 大久保 忠勝, T. Nishiuchi, S. Hirosawa, 宝野 和博. 3D atom probe investigation of the nanostructure development of Nd-Fe-B based HDDR powder. MMM-Intermag joint meeting 2010. 2010
  13. SEPEHRI AMIN, Hossein. Grain boundary structure and chemistry of Dy-diffusion processed Nd-Fe-B sintered magnets. MMM-Intermag joint meeting 2010. 2010
2009
  1. 大久保 忠勝, リィ ワンフェン, セペリ アミン ホセイン, 宝野 和博. Nd-Fe-B磁石のマルチスケール解析. 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. ラガハン ゴパラン, セペリ アミン ホセイン, コッポジ スレッシュ, 大久保 忠勝, 宝野 和博, 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. セペリ アミン ホセイン, リィ ワンフェン, 大久保 忠勝, 宝野 和博, T. Nishiuchi, S. Hirosawa. The effect of Ga on magnetic properties of Nd-Fe-B HDDR powders. EUROMAT 2009 . 2009
  7. セペリ アミン ホセイン, 大久保 忠勝, 宝野 和博. 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

その他の文献 TSV

2026
  1. MAMIYA, Hiroaki, TERADA, Noriki, K. Hiroi, T. Shinohara, SEPEHRI AMIN, Hossein. Neutron Bragg Edge Spectroscopy for Developing Practical Magnetic Materials. MLF Annual Report. 2024 [2] (2026) 42-43
2025
  1. Ken-ichi Uchida, Yuya Sakuraba, Hossein Sepehri-Amin. Foreword to the focus issue: materials science and technology for magnetic thermal management. Science and Technology of Advanced Materials. 26 [1] (2025) 2604891 10.1080/14686996.2025.2604891 Open Access
2014
  1. 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. proceeding of REPM2014. (2014) 406-408
2012
  1. SEPEHRI AMIN, Hossein, OHKUBO, Tadakatsu, M. Yano , T. Shoji , T. Schrefl, HONO, Kazuhiro. Microstructure and coercivity of hot deformed Nd-Fe-B anisotropic magnets with non-magnetic grain boundary phase. Proceeding of Rare Earth Permanent Magnets and their Applications REPM. (2012) 71-76

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  22. Manufacturing Method of Permanent Magnet (2021)
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  24. HOT DEFORMED MAGNET、AND A METHOD FOR PREPARING SAID HOT DEFORMED MAGNET (2020)
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  28. 希土類永久磁石の製造方法および希土類永久磁石 (2011)

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