Okamoto Satoshi

オカモトサトシ | Okamoto Satoshi

Affiliation and department：
Job title： Professor
Homepage URL (2)： http://www2.tagen.tohoku.ac.jp/lab/okamoto/ , http://db.tagen.tohoku.ac.jp/php/forweb/outline.php?lang=en&no=4041

Research field (1)： Electric/electronic material engineering

Research keywords (2)： thin film , magnetic material

Research theme for competitive and other funds (18)：

2024 - 2027 保磁力理論研究の新展開:原子スケールの揺らぎを保持したマルチスケール解析法の開発
2021 - 2024 Research of synthetic antiferromagnet for THz devices with Brillouin light scattering
2020 - 2023 軟磁性微粒子の高周波帯域における磁気損失の起源解明とその設計手法の開発
2017 - 2020 Engineering technology for high frequency spin dynamics
2017 - 2020 Magnetization reversal analysis of permanent magnet considering local demagnetizing field

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Papers (252)：

Tomomi Suwa, Nobuhisa Ono, Satoshi Okamoto. Reliable iron-loss evaluation under noisy conditions: Advantages of Bayesian estimation over conventional time averaging. AIP Advances. 2026. 16. 2. 025122
Hiroshi Tsukahara, Haodong Huang, Kiyonori Suzuki, Kanta Ono, Akira Kato, Satoshi Okamoto. General formulation of core loss in soft magnetic materials including effects of eddy current and magnetostriction. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. 2025. 635. 173597-173597
Keisuke Ishigami, Akihiro Yoshinari, Hiroki Iida, Hajime Nakamura, Tetsuya Nakamura, Satoshi Okamoto. Encompassing Investigation of the Correlation between Secondary Phase Formation, Heat Treatment and Coercivity for Nd-Fe-B Sintered Magnets by in situ High-Temperature Synchrotron X-ray Diffraction. MATERIALS TRANSACTIONS. 2025. 66. 11. 1419-1424
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. 2025. 16. 1. 8022
Masato Kuno, Nobuhisa Ono, Yosuke Imano, Akiri Urata, Hidehiko Oikawa, Satoshi Okamoto. Ultra-low core loss and high core saturation magnetization of nanocrystalline Fe-B-P-Cu powder cores fabricated by using a hot-press process. Acta Materialia. 2025. 294. 121159-121159

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MISC (119)：

岡本聡, 小野暢久, 谷口卓也, 塚原宙, 鈴木清策. 軟磁性材料の高周波損失に関する研究の現状と課題. 固体物理. 2025. 60. 299-308
岡本聡, 小野暢久, 谷口卓也, 佐藤佑樹, 上原裕二. 軟磁性圧粉コアの高精度鉄損測定と鉄損解析. 日本磁気学会誌まぐね. 2024. 19. 207-211
児玉俊之, 菊池伸明, 岡本聡, 岡本聡, 大野誠吾, 冨田知志, 冨田知志. Microwave Frequency Conversion using Time-varying Magnetic Metamaterials. 応用物理学会秋季学術講演会講演予稿集(CD-ROM). 2024. 85th
児玉俊之, 菊池伸明, 岡本聡, 岡本聡, 大野誠吾, 冨田知志, 冨田知志. Time-varying Permeability Metamaterials towards Microwave Frequency Conversion. 日本磁気学会学術講演概要集. 2024. 48th
諏訪智巳, 鈴木基寛, 大久保忠勝, 入山恭彦, 宮脇寛, 谷口卓也, 岡本聡. Nd-Fe-B熱間加工磁石の3次元磁化反転過程解析に向けた磁区抽出. 日本金属学会講演大会(Web). 2024. 175th

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Books (4)：

Magnetic Measurement Techniques for Materials Characterization
Springer 2021 ISBN:9783030704421
RF power semiconductor generator application in heating and energy utilization
Springer Nature Singapore Pte Ltd 2020
省/脱Dyネオジム磁石と新規永久磁石の開発
(株)シーエムシー出版 2015
薄膜の評価技術ハンドブック
2013

Lectures and oral presentations (186)：

パワエレ用軟磁性材料の損失起源と低損失化アプローチ
(2025 BMシンポジウム 2025)
次世代パワーエレクトロニクスに向けた軟磁性材料開発
(第10回岩崎コンファレンス 2025)
Development of new soft magnetic materials for next-generation power-electronics applications
(2025 JOINT SYMPOSIUM-Taipei Tech and IMRAM, Tohoku University 2025)
パワエレ用軟磁性材料の損失起源と低損失化アプローチ
(日本磁気学会第1回バルク軟磁性材料専門研究会 2025)
High-Precision Iron Loss Evaluation with Reduced Signal Averaging via Bayesian Inference
(MMM2025 2025)

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Education (3)：

Professional career (1)：

Work history (5)：

2025/04 - Tohoku University Institute of Multidisciplinary Research for Advanced Materials
2020/04 - Tohoku University Institute of Multidisciplinary Research for Advanced Materials
2007/04 - 2020/03 Tohoku University Institute of Multidisciplinary Research for Advanced Materials
2001/04 - 2007/03 Tohoku University Institute of Multidisciplinary Research for Advanced Materials
1997/04 - 2001/03 Tohoku University

Committee career (10)：

2026/04 - 2027/03 公益財団法人電磁材料研究所中・長期事業計画策定委員会
2025/10 - MMM2026 Program Committee
2025/09 - IEEE Roadmap program on Magnetic Passive Components for Power Electronics Representative of IEEE Magnetics Society
2025/05 - 日本磁気学会編集理事
2025/04 - 日本金属学会東北支部理事

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Awards (15)：

2025/09 - 日本磁気学会論文賞 eature Analysis on Iron Loss Behaviors of Various Soft Magnetic Cores Under DC Bias Fields, J. Magn. Soc. Jpn., Volume 49, Issue 1 (2025)
2023/09 - 日本磁気学会学会活動貢献賞
2022/04 - 市村清新技術財団第54回市村学術賞貢献賞マイクロ波アシスト記録方式の原理実証と応用
2020/09 - 日本磁気学会新技術・新製品賞トランス結合型透磁率測定装置の開発
2014/04 - 文部科学大臣表彰科学技術賞研究部門ナノサイズ磁性体の物性と機能に関する研究

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Association Membership(s) (3)：

日本金属学会 , 日本応用磁気学会 , 電気学会

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