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Innovation of advanced functional high-Tc superconducting thin films by using discontinuous nano-scale linear defects

Research Project

Project/Area Number 19K04474
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21050:Electric and electronic materials-related
Research InstitutionKyushu Sangyo University (2021-2022)
Kumamoto University (2019-2020)

Principal Investigator

Sueyoshi Tetsuro  九州産業大学, 理工学部, 准教授 (20315287)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords高温超伝導体 / 臨界電流密度 / 磁束ピンニング / イオン照射 / 異方性 / 照射欠陥
Outline of Research at the Start

高温超伝導体の高臨界電流密度化(高Jc化)に対して,不連続なナノ線状欠陥(径:4~8nm, 長さ・間隔:数10nm)は,強いピン力と等方的なピン力の両利点を併せ持ち,さらには超伝導領域に対する体積比も抑えられる相乗効果により,従来にない全磁場方向対応型の磁束ピン止め構造の構築を期待できる.本研究では,不連続ナノ線状欠陥の導入に重イオン照射を用いることで,不連続ナノ線状欠陥のc軸,ab面それぞれの磁場方向での磁束ピン止めの特徴を系統的に明らかにし,両磁場方向で同時に現行のJc値(ex. 3 MA/cm2 @ 1T)を超える磁束ピン止め構造の設計指針を明らかにする.

Outline of Final Research Achievements

We demonstrated the crossover from discontinuous columnar defects (CDs) to continuous ones depending on the irradiation angle of the same ion beam in high-Tc superconductors with anisotropic crystalline structure for the first time, by using 80 MeV Xe ion irradiation, which was capable of the formation of discontinuous CDs in the c-axis direction. In addition, the systematic introduction of CDs with different lengths to high-Tc superconducting films by using different ion beams revealed a new finding for the thermal relaxation of critical current density Jc: the segmentation of CDs further suppresses the relaxation rate at lower temperature. Furthermore, systematic studies for volume fractions of CDs controlled by their length and the irradiation fluence enabled us to find the influence of the volume fraction of CDs with different morphologies on Jc, which can be one of key factors to provide the breakthrough in the improvement of in-field Jc.

Academic Significance and Societal Importance of the Research Achievements

本研究では,異方的な結晶構造をもつ高温超伝導体においては,イオンビームの照射方向によって短尺状から連続な形状へと線状欠陥の連続性が変わることを,同一のイオンビームを用いて照射角度を変えて系統的に断面TEM観察することで,初めて明らかにした.また,イオン種,エネルギーの制御により,短尺状から連続な形状の線状欠陥を系統的に導入した高温超伝導薄膜を用いることで,磁束クリープに対する線状欠陥の短尺化の直接的な影響を明らかにした.以上の結果は,高温超伝導体の高Jc化に対して重イオンビームは,さらに高い自由度でピン止め点を導入できることを示し,その中で線状欠陥の短尺化が鍵であることを示唆している.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (31 results)

All 2023 2022 2021 2020 2019

All Journal Article (6 results) (of which Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (25 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Morphology of Columnar Defects Dependent on Irradiation Direction in High-<i>T</i> <sub>c</sub> Superconductors2022

    • Author(s)
      T. Sueyoshi, S. Semboshi, T. Ozaki, H. Sakane, T. Nishizaki, and N. Ishikawa
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 32 Issue: 6 Pages: 1-4

    • DOI

      10.1109/tasc.2022.3153436

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Modification of Critical Current Density Anisotropy in High-Tc Superconductors by Using Heavy-Ion Irradiations2021

    • Author(s)
      Tetsuro Sueyoshi
    • Journal Title

      Quantum Beam Science

      Volume: 5 Issue: 2 Pages: 1-21

    • DOI

      10.3390/qubs5020016

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Combined effect of flux pinning by three-directional columnar defects in a field-angular region of high-Tc superconductors2021

    • Author(s)
      Sueyoshi Tetsuro、Enokihata Ryusei、Hidaka Yuka、Irie Masahiro、Fujiyoshi Takanori、Okuno Yasuki、Ishikawa Norito
    • Journal Title

      Physica C: Superconductivity and its Applications

      Volume: 582 Pages: 1353824-1353824

    • DOI

      10.1016/j.physc.2021.1353824

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Summation of Flux Pinning by Columnar Defects Tilted at Different Angles in YBCO Thin Films2021

    • Author(s)
      Sueyoshi Tetsuro、Enokihata Ryusei、Yamaguchi Hiroshi、Fujiyoshi Takanori、Okuno Yasuki、Ishikawa Norito
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 31 Issue: 5 Pages: 1-5

    • DOI

      10.1109/tasc.2021.3059974

    • Related Report
      2020 Research-status Report
  • [Journal Article] Strong flux pinning by columnar defects with directionally dependent morphologies in GdBCO-coated conductors irradiated with 80 MeV Xe ions2020

    • Author(s)
      Sueyoshi Tetsuro、Kotaki Tetsuya、Furuki Yuichi、Fujiyoshi Takanori、Semboshi Satoshi、Ozaki Toshinori、Sakane Hitoshi、Kudo Masaki、Yasuda Kazuhiro、Ishikawa Norito
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: 2 Pages: 023001-023001

    • DOI

      10.35848/1347-4065/ab6f2b

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Flux Pinning by Columnar Defects Along a-axis in a-axis Oriented YBCO Thin Films2019

    • Author(s)
      Sueyoshi Tetsuro、Iwanaga Yasuya、Fujiyoshi Takanori、Takai Yosuke、Muta Mitsuhiro、Mukaida Masashi、Ichinose Ataru、Ishikawa Norito
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 29 Issue: 5 Pages: 1-4

    • DOI

      10.1109/tasc.2019.2896473

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 人工ピン入り高温超伝導線材に対する照射追加ピン止め効果2023

    • Author(s)
      末吉哲郎、尾崎壽紀、千星聡、坂根仁、西嵜照和、石川法人
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ハイエントロピー合金 (TaNb)0.7(ZrHfTi)0.3の磁場中超伝導特性2023

    • Author(s)
      川崎佑太、西嵜照和、末吉哲郎、北川二郎、石津直樹、加藤勝、野島勉、淡路智、佐々木孝彦
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 酸素アニールがAuイオン照射GdBa2Cu3Oy線材の超伝導特性に与える影響2023

    • Author(s)
      尾崎壽紀、岡崎宏之、越川博、山本春也、八巻徹也、末吉哲郎、坂根仁
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高圧ねじり加工されたハイエントロピー合金Hf21Nb25Ti15V15Zr24の超伝導特性2023

    • Author(s)
      西嵜照和, 川崎佑太, 末吉哲郎, 北川二郎, 石津直樹, 唐永鵬, 堀田善治, 加藤勝, 淡路智, 野島勉, 佐々木孝彦
    • Organizer
      日本物理学会2023年春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高温超伝導薄膜中の形状の異なる柱状欠陥のピン止め特性2022

    • Author(s)
      末吉哲郎、千星聡、尾崎壽紀、坂根仁、西嵜照和、石川法人
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高圧ねじり加工したNb3Snバルク超伝導体の磁場中超伝導特性2022

    • Author(s)
      西嵜照和, 川崎佑太, 末吉哲郎, 天瀬洸太, 内藤智之, 唐永鵬, 堀田善治, 淡路智, 野島勉, 佐々木孝彦
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Effect of Defect Morphology on Flux Pinning Properties in Heavy Ion Irradiated REBCO Films2022

    • Author(s)
      Tetsuro Sueyoshi, Satoshi Semboshi, Toshinori Ozaki, Hitoshi Sakane, Terukazu Nishizaki, Norito Ishikawa
    • Organizer
      Applied Superconductivity Conference 2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 超伝導ハイエントロピー合金(TaNb)0.7(ZrHfTi)0.3の臨界電流特性2022

    • Author(s)
      西嵜照和, 川崎佑太, 河野雄大, 末吉哲郎, 北川二郎, 石津直樹, 加藤勝, 野島勉, 淡路智, 佐々木孝彦
    • Organizer
      日本物理学会2022年第77回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 高温超伝導薄膜中の不連続柱状欠陥のピン止め特性2022

    • Author(s)
      末吉哲郎、尾崎壽紀、千星聡、坂根仁、西嵜照和、石川法人
    • Organizer
      第69回応用物理学関係連合講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 低エネルギーAuイオンを照射したGdBCOコート線材の臨界電流密度特性2022

    • Author(s)
      木内勝、尾崎壽紀、岡崎宏之、越川博、山本春也、八巻徹也、末吉哲郎、坂根仁
    • Organizer
      第69回応用物理学関係連合講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 50 MeV Krイオン照射した高温超伝導体の臨界電流密度特性2021

    • Author(s)
      末吉哲郎, 山口裕史, 藤吉孝則, 尾崎壽紀, 千星聡, 坂根仁, 西嵜照和, 石川法人
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] ハイエントロピー合金Hf21Nb25Ti15V15Zr24の臨界電流密度と渦糸構造2021

    • Author(s)
      西嵜照和, 北川二郎,石津直樹,末吉哲郎,加藤 勝,野島 勉,淡路 智,佐々木孝彦
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Modification of Critical Current Density Properties in High-Tc Superconductors by Tuning Columnar Defect Morphologies in Different Directions2021

    • Author(s)
      T. Sueyoshi, S. Semboshi, T. Ozaki, H. Sakane, T. Nishizaki, and N. Ishikawa
    • Organizer
      27th International Conference on Magnet Technology (MT27)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of 2 and 10 MeV Au‐ion irradiation on superconducting properties in GdBa2Cu3Oy coated conductors2021

    • Author(s)
      OZAKI Toshinori, KASHIHARA Takuya, OKADA Tatsunori, AWAJI Satoshi, KAKEYA Itsuhiro, SEMBOSHI Satoshi, OKAZAKI Hiroyuki, KOSHIKAWA Hiroshi, YAMAMOTO Shunya, YAMAKI Tetsuya, SUEYOSHI Tetsuro, SAKANE Hitoshi
    • Organizer
      27th International Conference on Magnet Technology (MT27)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Flux Pinning by Columnar Defects in High-Tc Superconductors under Longitudinal Magnetic Field2021

    • Author(s)
      T. Sueyoshi, R. Enokihata, H. Yamaguchi, T. Fujiyoshi, T. Ozaki, H. Sakane, T. Nishizaki, and N. Ishikawa
    • Organizer
      Material Research Meeting 2021 (MRM2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 50 MeV Krと200 MeV Xeイオンを照射した高温超伝導体の臨界電流密度特性2021

    • Author(s)
      末吉哲郎, 尾崎壽紀, 千星聡, 坂根仁, 石川法人
    • Organizer
      第68回応用物理学関係連合講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 低エネルギーAuイオン照射GdBa2Cu3Oy線材におけるJcの磁場角度依存性2021

    • Author(s)
      尾崎壽紀, 柏原卓弥, 岡田達典, 淡路智, 掛谷一弘, 千星聡, 岡崎宏之, 越川博, 山本春也, 八巻徹也, 末吉哲郎, 坂根仁
    • Organizer
      第68回応用物理学関係連合講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 80 MeV Xeイオンを照射した高温超伝導体に形成される柱状欠陥構造の照射方向依存性2020

    • Author(s)
      末吉哲郎, 千星聡, 尾崎壽紀, 坂根仁, 石川法人
    • Organizer
      2020年第81回 応用物理学会 秋季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 低エネルギーAuイオン照射したGdBa2Cu3Oy線材の超伝導特性2020

    • Author(s)
      尾崎壽紀, 柏原卓弥, 久保友幸, 千星聡, 末吉哲郎, 岡崎宏之, 越川博, 山本春也, 八巻徹也, 坂根仁
    • Organizer
      2020年第81回 応用物理学会 秋季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Competition between flux pinning effects by columnar defects oriented at different angles in YBCO thin films2020

    • Author(s)
      T. Sueyoshi, R. Enokihata, H. Yamaguchi, T. Fujiyoshi, A. Kitamura, Y. Okuno, N. Ishikawa
    • Organizer
      Applied Superconductivity Conference 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 10MeV Auイオン照射したYBa2Cu3Oy薄膜の酸素アニール効果2020

    • Author(s)
      尾崎 壽紀、柏原 卓弥、久保 友幸、千星 聡、末吉 哲郎、岡崎 宏之、越川 博、山本 春也、八巻 徹也、坂根 仁
    • Organizer
      第67回応用物理学関係連合講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 高温超伝導体の縦磁場下での柱状欠陥の磁束ピン止め2020

    • Author(s)
      末吉哲郎,榎畑龍星,山口裕史,藤吉孝則,喜多村茜,奥野泰希,石川法人
    • Organizer
      第67回応用物理学関係連合講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 高温超伝導体のab面付近での柱状欠陥のピン止めの競合2019

    • Author(s)
      末吉哲郎,日高優夏,榎畑龍星,山口裕史,藤吉孝則,喜多村茜,奥野泰希,石川法人
    • Organizer
      2019年度第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Auイオン照射したYBa2Cu3Oy薄膜の磁束ピンニング特性2019

    • Author(s)
      尾崎 壽紀、柏原 卓弥、久保 友幸、千星 聡、末吉 哲郎、岡崎 宏之、越川 博、山本 春也、八巻 徹也、坂根 仁
    • Organizer
      2019年度第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Competing flux pinning of columnar defects in different directions in high-Tc superconductors2019

    • Author(s)
      Tetsuro Sueyoshi, Masahiro Irie, Ryusei Enokihata, Yuka Hidaka, Takanori Fujiyoshi, Akane Kitamura, Yasuki Okuno, and Norito Ishikawa
    • Organizer
      32th International symposium on Superconductivity
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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