OHTAKE Mitsuru

Affiliation

Faculty of Engineering, Division of Systems Research

Job Title

Associate Professor

Research Fields, Keywords

Magnetic materials, Crystal Growth, エネルギーハーベスト, 電磁エネルギー変換, スピントロニクス, 薄膜, Nanomaterials

Mail Address

E-mail address

Related SDGs




Education 【 display / non-display

  • 2008.4
    -
    2011.3

    Chuo University   Doctor Course   Completed

  • 2006.4
    -
    2008.3

    Chuo University   Master Course   Completed

  • 2002.4
    -
    2006.3

    Chuo University   Graduated

Degree 【 display / non-display

  • Doctor of Engineering - Chuo University

  • Master of Engineering - Chuo University

Campus Career 【 display / non-display

  • 2018.4
     
     

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Systems Research   Associate Professor  

  • 2023.4
     
     

    Concurrently   Yokohama National UniversityInstitute of Advanced Sciences   Associate Professor  

  • 2018.4
     
     

    Concurrently   Yokohama National UniversityGraduate School of Engineering   Department of Systems Integration   Associate Professor  

  • 2018.4
     
     

    Concurrently   Yokohama National UniversityCollege of Engineering Science   Department of Mechanical Engineering and Materials Science   Associate Professor  

  • 2018.4
     
     

    Concurrently   Yokohama National UniversityCollege of Engineering Science   Department of Mechanical Engineering, Materials Science and Ocean Engineering   Associate Professor  

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External Career 【 display / non-display

  • 2023.7
    -
    2024.3

    National Institute for Materials Science (NIMS)   Magnetic Recording Materials Group, Research Center for Magnetic and Spintronic Materials   Visiting Researcher  

  • 2020.4
    -
    2021.3

    Chuo University   Faculty of Science and Enginnering   Part-time Lecturer  

  • 2017.4
    -
    2018.3

    Kogakuin University   Faculty of Engineering   Assistant Professor  

  • 2015.10
    -
    2018.3

    Chuo University   Faculty of Science and Enginnering   Researcher  

  • 2015.9
    -
    2017.3

    Kogakuin University   Faculty of Engineering   Assistant Professor  

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Academic Society Affiliations 【 display / non-display

  • 2020.5
     
     
     

    映像情報メディア学会

  • 2015.8
     
     
     

    電気学会

  • 2011.1
     
     
     

    日本鉄鋼協会

  • 2008.11
     
     
     

    日本金属学会

  • 2007.2
     
     
     

    応用物理学会

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Research Areas 【 display / non-display

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electronic devices and equipment

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electric/electronic material engineering

 

Books 【 display / non-display

  • "Magnetostriction" in "Handbook of Magnetic Material for Motor Drive Systems"

    Mitsuru Ohtake, Kosuke Imamura, Masaaki Futamoto( Role: Joint author)

    Springer Nature  ( ISBN:978-981-19-9644-3  [Reviewed]

    DOI

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    Total pages:28   Responsible for pages:1-28   Language:English Book type:Scholarly book

Thesis for a degree 【 display / non-display

  • Preparation and Characterization of Epitaxial Magnetic Thin Films

    Mitsuru Ohtake

    2011.3

    Doctoral Thesis   Single Work    [Reviewed]

  • Fabrication and characterization of epitaxial high-Ku magnetic thin films using UHV-MBE

    Mitsuru Ohtake

    2008.3

    Master Thesis   Single Work  

  • 島状成長した単層及び二層薄膜のナノ構造解析と電気・磁気特性評価

    大竹充, 秋田裕太, 半田貴洋

    2006.3

    Thesis(Others)   Joint Work  

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    ガラス基板上にAl,Cu,Ag,Au,Feの単層および二層薄膜を形成し,表面起伏と電気,磁気特性との関係を調べた.ガラス基板上における金属薄膜の成長様式は島状成長となり,形成初期過程では不連続膜となった.その結果,電気抵抗率はバルク値に比べて非常に高くなった.膜厚の増加に伴い,膜が連続になり,電気抵抗率もバルク値に収束する傾向が認められた.収束するまでに必要な膜厚は金属材料の種類によって変化し,表面拡散が少ないことが期待される高融点材料を用いることにより,薄い膜でもバルク値に収束させることができることが分かった.低融点と高融点の金属材料を積層させ,低融点材料の濡れ性向上させ,電気抵抗率を低減させる試みも行った.また,不連続膜構造は,磁性材料の磁化値を減少させることも示した.(担当部分) 薄膜試料作製全般,形態観察一部,電気特性測定一部,磁気特性測定全般

Papers 【 display / non-display

  • Crystallization from Amorphous Precursor and Surface Formation in Yttrium Iron Garnet Thin Film Affected by Deposition and Annealing Conditions

    Kosuke Imamura, Risa Yokoyama, Koji Sekiguchi, Mitsuru Ohtake

    IEICE Technical Report   125 ( 397 )   7 - 12   2026.2

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    Authorship:Last author   Language:Japanese   Publishing type:Research paper (research society, symposium materials, etc.)   Publisher:The Institute of Electronics, Information and Communication Engineers (IEICE)   Joint Work  

  • Analysis of demagnetization curves of Nd-Fe-B magnets

    Tetsuroh Kawai, Yamamoto Hitoshi, Ohtake Mitsuru

    The Papers of Technical Meeting on Magnetics, IEE Japan   MAG-25-188   51 - 56   2025.12

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    Authorship:Last author   Language:Japanese   Publishing type:Research paper (research society, symposium materials, etc.)   Publisher:The Institute of Electrical Engineers of Japan   Joint Work  

  • Structure and Magnetostrictive Properties of Epitaxial Fe-6.5 wt. %Si Alloy Thin Films

    Kosuke Imamura, Yuki Okabe, Mitsuru Ohtake

    The Papers of Technical Meeting on Magnetics, IEE Japan   MAG-25-119   19 - 22   2025.11

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    Authorship:Last author   Language:Japanese   Publishing type:Research paper (research society, symposium materials, etc.)   Publisher:The Institute of Electrical Engineers of Japan   Joint Work  

  • Formation of FeCo/VN Multilayer Films with Perpendicular Magnetic Anisotropy on Pd(001) Single-Crystal Underlayers

    Satoshi Tsuneizumi, Naoki Isogai, Kosuke Imamura, Takashi Hasegawa, Haruki Yamane, Mitsuru Ohtake

    IEICE Technical Report   125 ( 271 )   11 - 14   2025.11

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    Authorship:Last author   Language:Japanese   Publishing type:Research paper (research society, symposium materials, etc.)   Publisher:The Institute of Electronics, Information and Communication Engineers (IEICE)   Joint Work  

  • Growth Characteristics of Iron Nitride Epitaxial Thin Films Depending on Nitrogen Content and Substrate Orientation

    Kosuke Imamura, Mitsuru Ohtake

    ITE Technical Report   49 ( 35 )   1 - 6   2025.11

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    Authorship:Last author   Language:Japanese   Publishing type:Research paper (research society, symposium materials, etc.)   Publisher:The Institute of Image Information and Television Engineers   Joint Work  

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Review Papers 【 display / non-display

  • Characterizing Magnetostrictive Properties of Soft Magnetic Materials by Using Epitaxial Single-Crystal Thin Films

    Mitsuru Ohtake, Kosuke Imamura, Yuta Nakamura

    Magnetics Japan   19 ( 2 )   69 - 74   2024

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:The Magnetics Society of Japan   Joint Work  

  • Development of Media Nanostructure for Perpendicular Magnetic Recording

    Masaaki Futamoto,Mitsuru Ohtake

    Journal of the Magnetics Society of Japan   41 ( 6 )   108 - 126   2017.11  [Reviewed]  [Invited]

    DOI

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    Language:English   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:The Magnetics Society of Japan   Joint Work  

  • Metastable Ordered Phase Formation in CoPt and Co3Pt Alloy Thin Films Epitaxially Grown on Single-Crystal Substrates

    Mitsuru Ohtake,Daisuke Suzuki,Fumiyoshi Kirino,Masaaki Futamoto

    IEICE Transactions on Electronics   E96-C ( 12 )   1460 - 1468   2013.12  [Reviewed]  [Invited]

    DOI

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    Language:English   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:The Institute of Electronics, Information and Communication Engineers   Joint Work  

  • Structure and Magnetic Properties of Co/Pd Multilayer Films Epitaxially Grown on Single-Crystal Substrates

    Mitsuru Ohtake,Kousuke Tobari,Masaaki Futamoto

    IEICE Transactions on Electronics   E96-C ( 12 )   1452 - 1459   2013.12  [Reviewed]  [Invited]

    DOI

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    Language:English   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:The Institute of Electronics, Information and Communication Engineers   Joint Work  

Industrial Property Rights 【 display / non-display

  • 発電装置

    大竹充, 中村優太

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    Applicant:国立大学法人横浜国立大学

    Application no:特願2024-084029  Date applied:2024.5.23

    Announcement no:特開2025-177319  Date announced:2025.12.5

  • 発電装置

    大竹充, 川井哲郎, 二本正昭

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    Applicant:国立大学法人横浜国立大学

    Application no:特願2022-086851  Date applied:2022.5.27

    Announcement no:特開2023-174153  Date announced:2023.12.7

  • 磁気記録媒体及び磁気記録再生装置

    二本正昭, 大竹充

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    Applicant:学校法人 中央大学

    Application no:特願2007-189147  Date applied:2007.7.20

    Announcement no:特開2009-026394  Date announced:2009.2.5

Awards 【 display / non-display

  • 令和6年度 横浜国立大学 優秀研究者賞 技術進歩賞

    2025.3   横浜国立大学  

    Individual or group name of awards:大竹 充

  • 令和6年度 研究提案表彰(里見賞) 最優秀賞

    2024.11   公益財団法人 里見奨学会   磁界アシスト式電磁誘導型振動発電デバイスの材料・機械・磁気特性の横断的理解のための基礎研究

    Individual or group name of awards:大竹 充

  • 令和5年度 横浜国立大学ベストティーチャー賞

    2024.8   横浜国立大学  

    Individual or group name of awards:大竹 充

  • SEMICONアカデミアAward優秀賞

    2023.12   SEMI Japan   IoT社会を促進させる新たな環境適合型振動発電デバイス

    Individual or group name of awards:大竹研究室 (大竹充, 中村優太, 明田俊祐, 石川瑛士, 神谷颯, 今村光佑, 磯貝直希)

  • 令和2年度 日本磁気学会 論文賞

    2020.9   日本磁気学会   Influence of Cap-Layer on the Structure of FePt Alloy Thin Film Formed on VN and VC Underlayers

    Individual or group name of awards:Tomoki Shimizu, Mitsuru Ohtake, Masaaki Futamoto, Fumiyoshi Kirino, Nobuyuki Inaba

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Grant-in-Aid for Scientific Research 【 display / non-display

  • ソフト磁性複合材料における電気抵抗と磁気ひずみに関する学理構築

    Grant number:26K07571  2026.4 - 2029.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(C)

    Investigator(s):大竹充

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    Authorship:Principal investigator  Grant type:Competitive

  • 軽元素添加による結合状態制御に基づく低磁歪・高透磁率鉄基合金材料の創製

    Grant number:23K03938  2023.4 - 2026.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(C)

    Investigator(s):大竹充

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    Grant type:Competitive

  • 希土類金属と遷移金属から構成される規則合金のエピタキシャル薄膜形成に関する研究

    Grant number:17K14660  2017.4 - 2020.3

    科学研究費補助金  Grant-in-Aid for Young Scientists(B)

    Investigator(s):大竹充

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    Grant type:Competitive

  • エピタキシャル薄膜による異方性ナノコンポジット磁石の形成に関する研究

    Grant number:26820117  2014.4 - 2016.3

    科学研究費補助金  Grant-in-Aid for Young Scientists(B)

    Investigator(s):大竹充

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    Grant type:Competitive

  • 大容量MRAM対応のL10型規則合金とMgOの極薄積層膜形成技術に関する研究

    Grant number:23860047  2011.4 - 2013.3

    科学研究費補助金  Grant-in-Aid for Research Activity start-up

    Investigator(s):大竹充

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    Grant type:Competitive

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Other external funds procured 【 display / non-display

  • エピタキシャル成長配線技術の開発(新構造・新材料トランジスタと低抵抗配線の研究開発)

    Grant number:JPMJES2531  2025.12 - 2030.11

    Japan Science and Technology Agency  次世代エッジAI半導体研究開発事業

    Investigator(s):大竹充(主たる研究分担者)

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    Authorship:Coinvestigator(s) 

  • 磁界アシスト式電磁誘導型振動発電デバイスの材料・機械・磁気特性の横断的理解のための基礎研究

    2024.11 - 2025.9

    Private Foundations  研究提案表彰 (里見賞) 最優秀賞

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    Authorship:Principal investigator 

  • 磁歪式振動発電デバイスに適した磁性材料の開発と厚膜形成技術の基礎構築

    Grant number:23200045-0  2023.4 - 2026.3

    官民による若手研究者発掘支援事業 共同研究フェーズ

    Investigator(s):大竹充

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    Authorship:Principal investigator 

  • 磁歪式振動発電デバイスに適した磁性材料の開発と厚膜形成技術の基礎構築

    Grant number:20002152-0  2021.1 - 2023.3

    官民による若手研究者発掘支援事業 マッチングサポートフェーズ

    Investigator(s):大竹充

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    Authorship:Principal investigator 

  • 超高密度ビットパターンド媒体対応の磁性合金エピタキシャル積層薄膜形成技術の開発

    2011.8 - 2012.3

    Japan Science and Technology Agency  平成23年度 第1回 研究成果最適展開支援プログラム・FSステージ 探索タイプ

    Investigator(s):大竹充

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Presentations 【 display / non-display

  • Modulation of Intrinsic Magnetic Properties in Iron Nitride Thin Film on MgO(001) Single-Crystal Substrate through Nitrogen-Induced bcc-fcc Phase Variation (AH-02)

    Kosuke Imamura, Takayasu Sato, Shinji Isogami, Takahiro Yamazaki, Masato Kotsugi, Mitsuru Ohtake

    The IEEE International Magnetics Conference 2026 (INTERMAG 2026)  2026.4  The Institute of Electrical and Electronics Engineers

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    Event date: 2026.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Manchester, UK  

  • Perpendicular Magnetic Field-Assisted Vibration Power Generators Using Amorphous and Nanocrystalline Fe-Based Alloy Ribbons (ES-12)

    Naoki Isogai, Soh Kamiya, Yuta Nakamura, Tetsuroh Kawai, Mitsuru Ohtake

    The IEEE International Magnetics Conference 2026 (INTERMAG 2026)  2026.4  The Institute of Electrical and Electronics Engineers

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    Event date: 2026.4

    Language:English   Presentation type:Poster presentation  

    Venue:Manchester, UK  

  • Preparation of Fe-6.5 wt. % Si Alloy Epitaxial Thin Films with Disordered and Ordered Phases for Magnetostrictive Characterization (ER-12)

    Kosuke Imamura, Yuki Okabe, Yukiko K. Takahashi, Mitsuru Ohtake

    The IEEE International Magnetics Conference 2026 (INTERMAG 2026)  2026.4  The Institute of Electrical and Electronics Engineers

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    Event date: 2026.4

    Language:English   Presentation type:Poster presentation  

    Venue:Manchester, UK  

  • Effect of Annealing on the Microstructure and the Magnetostrictive Property of Nanogranular Fe-B-N Alloy Thin Film (CH-03)

    Naoki Isogai, Kosuke Imamura, Yuko Kaneda, Yukiko K. Takahashi, Yuta Nakamura, Masato Kotsugi, Mitsuru Ohtake

    The IEEE International Magnetics Conference 2026 (INTERMAG 2026)  2026.4  The Institute of Electrical and Electronics Engineers

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    Event date: 2026.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Manchester, UK  

  • Variation in Magnetostriction of Fe-Co Depending on Film Stress (AT-11)

    Shohei Umetsu, Yutaka Takahashi, Mitsuru Ohtake, Nobuyuki Inaba

    The IEEE International Magnetics Conference 2026 (INTERMAG 2026)  2026.4  The Institute of Electrical and Electronics Engineers

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    Event date: 2026.4

    Language:English   Presentation type:Poster presentation  

    Venue:Manchester, UK  

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Past of Collaboration and Commissioned Research 【 display / non-display

  • 界面応力と格子ひずみの積極的活用に基づく熱アシスト磁気記録FePt媒体の結晶高規則化技術

    Offer organization: 国立研究開発法人物質・材料研究機構(NIMS連携拠点推進制度)   Cooperative Research within Japan  

    Project Year: 2026.4  -  2027.3 

  • 逆ペロブスカイト型軽元素スピントロニクス材料による熱勾配励起量子ストレージ技術探索

    Offer organization: 国立研究開発法人物質・材料研究機構(NIMS連携拠点推進制度)   Cooperative Research within Japan  

    Project Year: 2023.5  -  2024.3 

  • 逆ペロブスカイト型軽元素スピントロニクス材料による量子ストレージ技術への展開

    Offer organization: 国立研究開発法人物質・材料研究機構(NIMS連携拠点推進制度)   Cooperative Research within Japan  

    Project Year: 2021.11  -  2023.3 

 

Charge of on-campus class subject 【 display / non-display

  • 2026   Introduction to nanomaterials engineering

    Interfaculty Graduate School of Innovative and Practical Studies

  • 2026   International Internships in Materials Engineering

    Graduate school of Engineering Science

  • 2026   Sub-research exercise in Materials Engineering

    Graduate school of Engineering Science

  • 2026   Advanced Study in Materials Engineering

    Graduate school of Engineering Science

  • 2026   Off-Campus Exercise in Materials Engineering

    Graduate school of Engineering Science

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Charge of off-campus class subject 【 display / non-display

  • 電気・電子材料

    Institution:中央大学

  • 電気電子材料

    Institution:工学院大学

  • エネルギー・環境倫理

    Institution:工学院大学

  • 電力用デバイス

    Institution:工学院大学

  • 電気磁気学Ⅱ

    Institution:工学院大学

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Committee Memberships 【 display / non-display

  • 日本磁気学会 論文編集委員会

    2020.9  分野主査(Editor In Chief)

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    Committee type:Academic society 

  • 日本磁気学会 論文編集委員会

    2023.6  幹事

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    Committee type:Academic society 

  • 日本学術振興会 R071革新的薄膜界面委員会

    2025.4  委員

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    Committee type:Government 

  • エネルギーハーベスティングコンソーシアム

    2023.6  正式オブザーバー

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    Committee type:Other 

  • 電子情報通信学会 磁気記録・情報ストレージ研究会専門委員

    2024.6  幹事

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    Committee type:Academic society 

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Social Contribution(Extension lecture) 【 display / non-display

  • 日本磁気学会 第260回研究会/第19回エネルギーマグネティクス専門研究会 オーガナイザ(DX時代のモータ用磁性材料およびモータ開発の最前線)

    Role(s): Planner

    日本磁気学会  2026.6

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    Audience: Researchers

    Type:Planning and holding meetings,conferences,e.t.c.

  • 日本磁気学会 第2回バルク軟磁性材料研究会 世話人(時間スケールで読み解く軟磁性材料の磁化応答〜スピントロニクスとの接点を探る〜)

    Role(s): Planner

    日本磁気学会  2026.4

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    Audience: Researchers

    Type:Planning and holding meetings,conferences,e.t.c.

  • ISAFM 2026 General Chair

    Role(s): Planner

    ISAFM  2026.2

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    Audience: Researchers

    Type:Lecture

  • 磁気記録・情報ストレージ研究会/マルチメディアストレージ研究会 座長

    Role(s): Host

    電子情報通信学会/映像情報メディア学会  2025.12

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    Audience: Researchers

    Type:Lecture

  • 日本磁気学会 第49回学術講演会 座長(セッション:モータ駆動用ゼロ磁歪電磁鋼材料の研究動向)

    Role(s): Host

    日本磁気学会  2025.9

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    Audience: Researchers

    Type:Lecture

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Media Coverage 【 display / non-display

  • 振動からエネルギーを創り出す新しい発電デバイスの開発と適用検討

    国立大学56工学系学部長会議  国立大学56工学系学部 ホームページ 工学ホットニュース  https://www.mirai-kougaku.jp/hot-news/pages/250404.php  2025.4

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    Author:Myself 

  • 横浜国大、市販材で振動発電素子 IoT機器電源に提案

    株式会社日刊工業新聞社  日刊工業新聞  https://www.nikkan.co.jp/articles/view/00723416  2024.5

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    Author:Other 

  • 横浜国大、市販材で振動発電素子 IoT機器電源に提案

    株式会社日刊工業新聞社  日刊工業ビデオニュース  https://www.youtube.com/watch?v=tNQ3qFddDlo  2024.5

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    Author:Other