Rchr
J-GLOBAL ID：200901003421255579
Update date: Sep. 28, 2024
Sakuma Akimasa
サクマ アキマサ | Sakuma Akimasa
Affiliation and department：
Job title：
Professor
Homepage URL (1)：
http://sakuma.apph.tohoku.ac.jp/web/
Research field (1)：
Magnetism, superconductivity, and strongly correlated systems
Research keywords (4)：
electric transport
, electronic structure
, metallic ferromagnetism
, magnetism
Research theme for competitive and other funds (19)：
- 2003 - 現在 Electronic and magnetic properties of magnetic multilayers
- 2019 - 2024 Establishment of the new method for material synthesis utilizing light elements and their expansion to develop rare-earth-free magnet
- 2019 - 2020 軽元素を利用した新しい物質合成法の反応メカニズムの解明と磁石材料設計指針の構築
- 2016 - 2019 Synthesis of high saturation magnetization Fe nano soft magnetic nanoparticles with interstitial solid solution of Carbon and Oxygen
- 2016 - 2019 Synthesis and magnetic properties of multi-element iron nitride nanoparticles by controll of site selectivity and degree of order
- 2016 - 2019 Microscopic study on the Gilbert damping constant for the inhomogeneous spin synamics
- 2013 - 2016 First principles calculation for the magnetic damping constants of transition metal alloys and magnetic multilayers
- 2012 - 2015 Magnetic damping control of ferromagnetic thin films with negative spin polarization and development of highly efficient spin-current generator
- 2010 - 2012 First-principles calculation of conductivity of magnetic alloys and magnetic multilayers
- 2008 - 2010 emergence of hidden orders in strongly correlated superconductors ; from sub-nano scale to bulk systems
- 2008 - 2008 Theoretical study on the inter-grain magnetic interaction in the panoscopic assembled rare earth magnetic materials
- 2007 - 2008 Theoretical study on the magnetic structures at the interfaces of magnetic multi-layers and the spin dynamics
- 2005 - 2008 Fabrication and Magnetism of Fine Nano-Particles by Ion-Beam Induced CVD
- 2005 - 2008 Development of the methods for designing spintronics devices and analyzing spin-polarized current
- 2004 - 2008 パノスコピック形態制御希土類系磁性体における粒間磁気相互作用の電子論的研究
- 2006 - 2007 Anomalous properties in high-Tc cuprates due to inhomogeneous electronic states
- 2004 - 2007 パノスコピック形態制御された希土類系物質の電磁物性とその高次機能設計
- 2004 - 2006 Theoretical studies on spin-structure and dynamics in nano-scale magnetic materials
- 2001 - 2003 Fundamental physical properties of Mn system alloys with platinum group element
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Papers (259)：
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Shogo Yamashita, Akimasa Sakuma. Magnetization and exchange-stiffness constants of Fe-Al-Si alloys at finite temperatures: A first-principles study. Journal of Applied Physics. 2024. 136. 1. 013903-1-013903-8
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Akimasa Sakuma. Evaluation of the Exchange Stiffness Constants of Itinerant Magnets at Finite Temperatures from the First-Principles Calculations. Journal of the Physical Society of Japan. 2024. 93. 5. 054705-1-054705-6
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Shogo Yamashita, Akimasa Sakuma. First-principles investigation of transition of magnetic structures of ordered and disordered HfMnSb2 and TiMnSb2. Japanese Journal of Applied Physics. 2024. 63. 025501-1-0255015
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Yohei Kota, Akimasa Sakuma. Effects of local distortion on magnetocrystalline anisotropy in α′′-Fe16N2: a first-principles study. Japanese Journal of Applied Physics. 2023. 62. 12. 128004-1-128004-3
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Shogo Yamashita, Akimasa Sakuma. Finite-temperature second-order perturbation analysis of magnetocrystalline anisotropy energy of L10-type ordered alloys. Physical Review B. 2023. 108. 5. 054411-1-054411-7
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MISC (66)：
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Yohei Kota, Akimasa Sakuma. Erratum: Effects of local distortion on magnetocrystalline anisotropy in α′′-Fe16N2: a first-principles study [Jpn. J. Appl. Phys. 62, 128004 (2023)]. Japanese Journal of Applied Physics. 2024. 63. 1. 019403-1-019403-2
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Basis of Anomalous Hall Effect. 2023. 1-9
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佐久間 昭正. 希土類磁石の磁気特性に対する熱と界面の効果. アモルファス・ナノ材料第147委員会 第133回研究会資料. 2016. 43-51
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佐久間 昭正, 佐々木 良, 小林 尚史, 兵頭 一茂, 三浦 大介, 小田 洋平. 強磁性体の結晶磁気異方性に関する理論研究. マグネティクス研究会. 2015. 15-18
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小林 尚史, 兵頭 一茂, 佐久間 昭正. 遷移金属合金の磁気異方性に与えるスピン揺らぎの影響 (磁気記録・情報ストレージ). 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報. 2015. 115. 71. 13-16
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Books (5)：
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磁気便覧
丸善 2016 ISBN:9784621300145
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省/脱Dyネオジム磁石と新規永久磁石の開発
シーエムシー出版 2015 ISBN:9784781310725
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磁性の電子論
共立出版 2010
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HANDBOOK OF ADVANCED MAGNETIC MATERIALS Vol. 2
Springer, New York 2006
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Handbook of Magnetic Materials Vol. 16
Elsevier Science 2006
Lectures and oral presentations (50)：
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A trail to evaluate the magnetic parameters in the LLG equation from the first principles
(2023)
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Basis of Anomalous Hall Effect
(2023)
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有限温度における磁気輸送特性の理論計算
(「スピントロニクス学術研究基盤と連携ネットワーク」シンポジウム 2022)
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希土類磁石の有限温度における磁気異方性に関する理論的考察
(日本金属学会2017春季学術講演会 2017)
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Theoretical Study on the Temeprature Dependence of Magnetic Anisotropy Constants of Rare Earth Permanent Magnets
(TMS2017 2017)
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Education (2)：
- - 1985 Tohoku University Graduate School, Division of Engineering applied physics
- - 1980 Tohoku University Faculty of Engineering department of applied physics
Professional career (1)：
Work history (1)：
- 1985/04 - 2003/03 Hitachi Metals. Ltd.
Committee career (8)：
- 2015/04 - 2016/03 日本物理学会 領域3代表
- 2015/04 - 2016/03 日本物理学会 領域3代表
- 2014/04 - 2016/03 日本物理学会 受賞候補等推薦委員
- 2014/04 - 2016/03 日本物理学会 受賞候補等推薦委員
- 2014/04 - 2015/03 日本物理学会 領域3副代表
- 2014/04 - 2015/03 日本物理学会 領域3副代表
- 1994/04 - 2003/03 Magnetic Society of Japan 学会誌編集委員
- 1994/04 - 2003/03 日本応用磁気学会 学会誌編集委員
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Awards (11)：
- 2024/04 - The Physical Society of Japan JPSJ Papers Editors' Choice Evaluation of the Exchange Stiffness Constants of Itinerant Electron Magnets at Finite Temperatures from the First Principles Calculations
- 2020/03 - The Physical Society of Japan The 25th Outstanding Paper Award of the Physical Society of Japan Anisotropic Magnetoresistance Effects in Fe, Co, Ni, Fe4N and Half-Metallic Ferroagnet: A Systematic Analysis
- 2019/12 - The Physical Society of Japan JPSJ Papers of Editors' Choice Voltage-Controlled Magnonic Spin Tunneling Junction
- 2015/09/09 - 日本磁気学会 日本磁気学会論文賞 Dependence of Magnetic Damping on Temperature and Crystal Orientation in Epitaxial Fe4N Thin Films
- 2013/09 - 日本磁気学会 業績賞 「機能性磁性材料に関する電子論的研究」により応用磁気の分野において多大な功績を挙げ学術と産業の進歩に貢献
- 2013/09 - 日本磁気学会 論文賞 「正方晶Fe-Co合金の磁気異方性に関する理論的検証」 J. Magn. Soc. Japan 37, 17-23 (2013)
- 2013/09 - 日本磁気学会 出版賞 「磁性の電子論」(共立出版)は磁気の学理と応用の発展に関して多大な貢献が認められる
- 2008/09/14 - 日本磁気学会 日本磁気学会論文賞 Co2MnSiを用いた強磁性トンネル接合における極高スピン分極率の実現
- 2007/09/19 - (社)日本金属学会 日本金属学会論文賞 Electrical and Magnetic Properties, and Electronic Structures of Pseudo-Gap-Type Antiferromagnetic L10-Type MnPt Alloys
- 2006/09/12 - 日本応用磁気学会 日本応用磁気学会優秀研究賞 遷移金属合金の磁気特性に関する電子論的理論研究
- 1994/09/13 - 日本応用磁気学会 日本応用磁気学会論文賞 体心正方晶FeRh系合金の磁性
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Association Membership(s) (2)：
Magnetic Society of Japan
, Physical Society of Japan
