- Address
- 305-0047 茨城県つくば市千現1-2-1 [アクセス]
[論文] | [書籍] | [会議録] | [口頭発表] | [その他の文献] | [公開特許出願]
論文 TSV
2023
- 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
- 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
- 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
2022
- 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
- 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
- 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
- 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 Open Access
- 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 Open Access
- 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
2021
- 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
- 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 Open Access
- 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
- 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
- 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
- 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
- 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 Open Access
- 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 Open Access
2020
- 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
- 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 Open Access
- 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 Open Access
- 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
- 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 Open Access
- 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 Open Access
2019
- 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 Open Access
- 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
- 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
- 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 Open Access
2018
- 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 Open Access
- 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 Open Access
- 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
2017
- 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 Open Access
書籍 TSV
会議録 TSV
口頭発表 TSV
2023
- 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
- 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
- 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
2022
- 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
- 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
- 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
- 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
2021
- 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
- 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
- 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
- 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
2020
- 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
2018
- 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
- 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
2017
- 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
- 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
2016
- 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
- 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
その他の文献 TSV
公開特許出願 TSV
- 強磁性粉末、電磁ノイズ抑制部材及び電磁ノイズ抑制シート (2023)
- Rare-earth magnet (2023)
- 可変磁力モータ用R-Fe-B熱間加工磁石、可変磁力モータ、車両及び家庭用電子機器 (2023)
- ErCo2系の磁気熱量化合物及びこれを用いた磁気冷凍装置 (2022)
- ErCo2系の磁気熱量化合物及びこれを用いた磁気冷凍装置 (2022)
- 希土類-鉄-ホウ素型合金の急冷凝固生成物及びこれを用いた磁気冷凍装置、並びに金属間化合物RE2Fe14B相からなる急冷凝固永久磁石の製造方法 (2022)
- 希土類磁石および希土類磁石の製造方法 (2021)
- HOT DEFORMED MAGNET、AND A METHOD FOR PREPARING SAID HOT DEFORMED MAGNET (2020)
- 希土類磁石の製造方法 (2020)
- 希土類磁石及びその製造方法 (2019)