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J-GLOBAL ID：200901092341766133   Update date: Oct. 29, 2024

Yokoyama Kazuya

ヨコヤマ カズヤ | Yokoyama Kazuya
Affiliation and department：
Ashikaga University Faculty of Engineering Department of Innovative Engineering,Division of Electrical and Electronic Engineering

About Ashikaga University Faculty of Engineering Department of Innovative Engineering,Division of Electrical and Electronic Engineering


Job title： Professor
Homepage URL  (1)： http://www2.ashitech.ac.jp/elec/yokoyama/index.html
Research field  (1)： Electric/electronic material engineering
Research keywords  (8)： 超伝導磁石 ,  着磁 ,  高温酸化物超伝導体 ,  超伝導 ,  Superconducting bulk magnet ,  Magnetization ,  High-Tc oxide superconductor ,  Superconductivity
Research theme for competitive and other funds  (9)：
  • 2024 - 2029 高温超伝導バルク磁石の強力な静磁場勾配による拡散NMRと分子識別の試み
  • 2024 - 2027 小型超伝導磁石の回転機応用に向けた高温超伝導バルク体の効率的な磁場捕捉手法の検討
  • 2022 - 2025 単一の超電導バルク磁極を使った超小型NMRの研究
  • 2020 - 2023 Consideration of magnetizing system aiming for light-weighting of superconducting motor
  • 2015 - 2017 無電解ニッケルめっき廃液からのニッケル回収のための磁気分離技術の研究
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Papers (59)：
  • Kento TAKEMURA, Kimiaki SUDO, Rémi DORGET, Joseph LONGJI DADIEL, Masaki SAKAFUJI, Kazuya YOKOYAMA, Tetsuo OKA, Naomichi SAKAI. Fabrication of RE-Ba-Cu-O Joined Bulk Superconductor by Local Melt-Growth Method and Evaluation of Pulse Field Magnetization Behavior. TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan). 2024. 59. 4. 236-245
  • K. Takemura, K. Sudo, R. Dorget, J. L. Dadiel, M. Sakafuji, K. Yokoyama, T. Oka, N. Sakai. Study on the PFM Behavior of GdBCO Bulk Joined by ErBCO and Its FEM Simulation. IEEE Transactions on Applied Superconductivity. 2024
  • Kento Takemura, Kimiaki Sudo, Masaki Sakafuji, Kazuya Yokoyama, Tetsuo Oka, Naomichi Sakai. Improvement of Superconducting Joint Properties for GdBa2Cu3Ox Bulk Superconductors Joined with ErBa2Cu3Ox Superconductor Using Local Melt-Growth Method. Materials. 2024
  • K. Yokoyama, T. Oka. A Numerical Analysis of Pulsed-Field Magnetization Characteristics of REBCO Bulk Magnets When Using Various Soft-Iron Yokes. IEEE Transactions on Applied Superconductivity. 2023
  • K. Takemura, K. Sudo, R. Dorget, J. L. Dadiel, M. Sakafuji, K. Yokoyama, T. Oka, M. Murakami, N. Sakai. Pulsed Field Magnetizing Behavior of Gd-Ba-Cu-O Bulk Superconductor With a Superconducting Joint. IEEE Transactions on Applied Superconductivity. 2023. 33. 5
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MISC (243)：
  • 岡徹雄, 関根芸妍, 菊地紘生, 横山和哉, 坂井直道, 逸見智和. Measurement of the levitation force of permanent magnet for non-contact stirrer using HTS bulk magnet and cryocooler. 電気学会全国大会講演論文集(CD-ROM). 2024. 2024
  • 竹村賢人, 須藤正照, 坂藤正樹, 横山和哉, 岡徹雄, 坂井直道. Control of joining properties of Gd-Ba-Cu-O joined bulk superconductor using Er-Ba-Cu-O superconductor joining material. 低温工学・超電導学会講演概要集. 2023. 105th
  • 坂藤正樹, 菊池翔, 竹村賢人, 岡徹雄, 坂井直道, 山本航輝, 岡村哲至, 高橋雅人, 仲村高志, 横山和哉. Measurement of self-diffusion coefficient using single-sided NMR with high magnetic field gradient generated by SmBCO-based bulk superconductor. 低温工学・超電導学会講演概要集. 2023. 105th
  • 岡撤雄, 横山和哉, 高橋雅人, 坂井直道. Application of Intense Magnetic Field and Magnetic Levitation by High Temperature Superconducting Bulk Magnet. 日本AEM学会誌. 2023. 31. 3
  • 高橋雅人, 高橋雅人, 坂藤正樹, 坂井直道, 横山和哉, 岡徹雄, 岡徹雄, 仲村高志, 仲村高志. Development of a diffusion and T2 relaxation NMR measurement system using the surface gradient field of a high-temperature superconducting bulk magnet. Abstracts. Annual Meeting of the NMR Society of Japan. 2023. 62nd (CD-ROM)
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Patents (8)：
  • 高温超伝導バルク材を用いた発電機
  • 磁気分離装置
  • 超電導永久磁石装置
  • バルク超伝導体のパルス着磁方法
  • バルク超伝導体のパルス着磁方法
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Books (2)：
  • High-Temperature Superconductors: Occurrence, Synthesis and Applications
    Nova science publisher 2018 ISBN:9781536133417
  • 入門 磁気活用技術
    工業調査会 2005
Lectures and oral presentations  (40)：
  • REBCOバルクのパルス着磁におけるヨークの形状と捕捉磁場の関係
    (令和2年電気学会全国大会 2020)
  • Magnetizing performance evaluation of GdBCO bulkmagnetusingdifferent shapes of soft-iron yoke
    (10th ACASC / 2nd Asian-ICMC / CSSJ joint conference 2020)
  • Trapped field evaluation of ring-shaped GdBCO bulkmagnetexcited by pulsed field magnetization
    (10th ACASC / 2nd Asian-ICMC / CSSJ joint conference 2020)
  • Magnetic Flux Trapping and Flux Jumps in Pulsed Field Magnetizing Processes in REBCO and Mg-B Bulk Magnets
    (32th International Symposium on Superconductivity (ISS2019) 2019)
  • Pulsed field magnetization of GdBCO bulk using a ring-shaped soft-iron yoke
    (32th International Symposium on Superconductivity (ISS2019) 2019)
ｍore...
Education (3)：
  • 1995 - 1999 Niigata University Graduate School of Science and Technology Specizliaed Course of Information Science and Engineering
  • 1993 - 1995 Niigata University
  • 1989 - 1993 Niigata University Faculty of Engineering Department of Electrical and Electronic Engineering
Professional career (1)：
  • Doctor(Engineering) (Niigata University)
Work history (10)：
  • 2018 - 現在 Ashikaga University
  • 2014 - 2018 Ashikaga University
  • 2009 - 2014 Ashikaga University
  • 2008 - 2009 Niigata University
  • 2006 - 2009 Ashikaga University
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Committee career (11)：
  • 2018 - 現在 低温工学会 企画委員会委員
  • 2017 - 現在 低温工学会 磁気挙動委員会委員
  • 2017 - 2019 電気学会 超電導バルクの産業応用調査専門委員会幹事補
  • 2017 - 2019 栃木県立足利工業高等学校評議員
  • 2015 - 2018 電気学会 除染技術への超電導磁気力制御法の適用調査専門委員会
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Association Membership(s) (2)：
The Institute of Electrical Engineers of Japan ,  the Cryogenics and Superconductivity Society of Japan
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