publication_type publication_year number author title journal_title volume_number issue_number start_page end_page doi reported_at Paper 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 116486 116486-6 https://doi.org/10.1016/j.scriptamat.2024.116486 2026-04-11 09:32:25 +0900 Paper 2024 1 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 119869 119869-8 https://doi.org/10.1016/j.actamat.2024.119869 2026-04-11 09:32:25 +0900 Paper 2024 2 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 120159 120159 https://doi.org/10.1016/j.actamat.2024.120159 2026-04-11 09:32:25 +0900 Paper 2024 3 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 116095 116095-6 https://doi.org/10.1016/j.scriptamat.2024.116095 2026-04-11 09:32:25 +0900 Paper 2024 4 SEPEHRI AMIN Hossein, BOLYACHKIN Anton, TANG Xin, Sepehri-Amin H. High coercivity permanent magnets without reliance on scarce elements 応用物理 93 8 466 471 https://doi.org/10.11470/oubutsu.93.8_466 2026-04-11 09:32:25 +0900 Paper 2024 5 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 34-1 34-9 https://doi.org/10.1038/s41524-024-01218-5 2026-04-11 09:32:25 +0900 Paper 2024 6 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 102195 102200-11 https://doi.org/10.1016/j.mtla.2024.102195 2026-04-11 09:32:25 +0900 Paper 2024 7 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 054060-1 054060-10 https://doi.org/10.1103/physrevapplied.22.054060 2026-04-11 09:32:25 +0900 Paper 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 https://doi.org/10.1038/s41427-023-00498-5 2026-04-11 09:32:25 +0900 Paper 2023 2 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 119039 https://doi.org/10.1016/j.actamat.2023.119039 2026-04-11 09:32:25 +0900 Paper 2022 1 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 https://doi.org/10.1038/s41427-022-00417-0 2026-04-11 09:32:25 +0900 Paper 2022 2 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 118228 https://doi.org/10.1016/j.actamat.2022.118228 2026-04-11 09:32:25 +0900 Paper 2022 3 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 114797 https://doi.org/10.1016/j.scriptamat.2022.114797 2026-04-11 09:32:25 +0900 Paper 2022 4 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 117942 https://doi.org/10.1016/j.actamat.2022.117942 2026-04-11 09:32:25 +0900 Paper 2022 5 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 117928 https://doi.org/10.1016/j.actamat.2022.117928 2026-04-11 09:32:25 +0900 Paper 2022 6 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 117716 https://doi.org/10.1016/j.actamat.2022.117716 2026-04-11 09:32:25 +0900 Paper 2022 7 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 117744 https://doi.org/10.1016/j.actamat.2022.117744 2026-04-11 09:32:25 +0900 Paper 2022 8 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 117747 https://doi.org/10.1016/j.actamat.2022.117747 2026-04-11 09:32:25 +0900 Paper 2021 1 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 142405 https://doi.org/10.1063/5.0058847 2026-04-11 09:32:25 +0900 Paper 2021 2 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 053001 https://doi.org/10.35848/1882-0786/abf667 2026-04-11 09:32:25 +0900