Study on the magnetic flux trapping and high-quality superconducting films by controlling artificial pinning centers using molecular doping

• Project/Area Number: 17K06346
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Electronic materials/Electric materials
• Research Institution: Shizuoka University
• Principal Investigator: Kita Ryusuke 静岡大学, 工学部, 教授 (90303528)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 高温超伝導 / 超伝導薄膜 / 臨界電流密度 / 人工ピニングセンター / 分子ドーピング / 有機金属塗布法 / 高温超伝導薄膜 / 臨界電流 / 磁束ピニング / 酸化物高温超伝導薄膜 / 臨海電流密度 / 量子磁束 / 超伝導材料・素子 / 電子・電気材料

Outline of Final Research Achievements

We have investigated the fabricating process of high-temparature superconducting thin films with high-performance critical current density by controlling the size and density of artificial pinning centers using the crystallization of amorphous thin films under extremely-low oxygen pressure. The formation process of high-temparature superconducting thin films and the interaction between artificial pinning centers and magnetic quantum fluxes have been studied. As a result, the critical current density property of the high-temparature superconducting films was enhanced by the improvement on the crystal growth and surface flatness by tetrakis Zr molecule doping into the coating solution to fabricate the films. Furthermore the pinning property the high-temparature superconducting thin films in the magnetic fields ranging from low to high magnetic field was increased by simultaneous doping of Hf and La.

Academic Significance and Societal Importance of the Research Achievements

本成果により、高い磁場中臨海電流密度を有する高機能酸化物高温超伝導薄膜を実現することが可能となった。これにより、大電力を超低損失で輸送できる超伝導ケーブルの実用化に大きく寄与することが可能となった。更にこの技術を基に、グローバルな超伝導ケーブルネットワークを構築することにより、低炭素社会の実現や二酸化炭素排出の無い社会の実現に貢献できることが期待される。また、次世代医療分野への応用も可能となる。

Research Products

• [Journal Article] 成膜温度を変化させて作製したYBa2Cu3O7+BaHfO3薄膜の磁束ピンニング特性 (2019)
  • Author(s): 堀出朋哉、鳥越健太、喜多隆介、中村亮太、石丸学、淡路智、松本要
  • Journal Title: 日本金属学会誌 Volume: 83 Pages: 320-326
  • NAID: 130007695350
  • Peer Reviewed
• [Journal Article] Improvement of Jc properties for Hf and La co-doped Gd123 films fabricated by fluorine-free MOD method (2019)
  • Author(s): J. Fukui, O. Miura, R. Kita
  • Journal Title: IEEE Transactions on Applied Superconductivity Volume: 29 Pages: 052601-052605
  • Peer Reviewed
• [Journal Article] Geometric and compositional factors on critical current density in YBa2Cu3O7－δ films containing nanorods (2018)
  • Author(s): Tomoya Horide, Sho Nagao, Ryosuke Izutsu, Manabu Ishimaru, Ryusuke Kita, Kaname Matsumoto
  • Journal Title: Superconductor Science and Technology Volume: 31 Issue: 6 Pages: 065012-065019
  • DOI: 10.1088/1361-6668/aabe68
  • Peer Reviewed
• [Journal Article] Pin potential effect on vortex pinning in YBa2Cu3O7-δ films containing nanorods: Pin size effect and mixed pinning (2017)
  • Author(s): T. Horide, N. Matsukida, M. Ishimaru, R. Kita, S. Awaji, K. Matsumoto
  • Journal Title: Applied Physics Letters Volume: 110 Issue: 5 Pages: 052601-052605
  • DOI: 10.1063/1.4975300
  • NAID: 120006596470
  • Peer Reviewed
• [Journal Article] Improvement of flux pinning properties for hafnium doped Gd123 thin films fabricated by fluorine-free MOD method (2017)
  • Author(s): N. Kobayashi, R. Kita, O. Miura
  • Journal Title: IEEE Transactions on Applied Superconductivity Volume: 27 Issue: 4 Pages: 99-103
  • DOI: 10.1109/tasc.2017.2655886
  • Peer Reviewed
• [Journal Article] Strong c-axis correlated pinning and hybrid pinning in YBa2Cu3O7-δ films containing BaHfO3 nanorods and stacking faults (2017)
  • Author(s): T. Horide, K. Otsubo, R. Kita, N. Matsukida, M. Ishimaru, S. Awaji, K. Matsumoto
  • Journal Title: Superconductor Science and Technology Volume: 30 Issue: 7 Pages: 074009-074009
  • DOI: 10.1088/1361-6668/aa70d3
  • Peer Reviewed
• [Journal Article] Effect of lanthanum addition on the fabrication of REBa2Cu3Oy (RE=Gd, Sm and Dy) thin films by metal organic deposition using fluorine-free solutions (2017)
  • Author(s): S. Kato, R. Kita, N. Kobayashi, O. Miura
  • Journal Title: Journal of Physics: Conf. Series Volume: 871 Pages: 012040-012040
  • DOI: 10.1088/1742-6596/871/1/012040
  • Peer Reviewed
• [Presentation] Improvement of Jc properties for Hf and La co-doped Gd123 films fabricated by fluorine-free MOD method (2019)
  • Author(s): J. Fukui, R. Kita, O. Miura
  • Organizer: 6th International Conference on Magnet Technology
  • Int'l Joint Research
• [Presentation] Improvement of critical current densities for Ce, Hf doped Gd123 thin film fabricated by fluorine-free MOD method (2019)
  • Author(s): T. Hatano, J. Fukui, R. Kita, O. Miura
  • Organizer: 32nd International Superconductivity on Superconductivity
  • Int'l Joint Research
• [Presentation] 液相アシスト MOD 法を用いた超伝導薄膜成長における混晶化効果 (2019)
  • Author(s): 鈴木琢真、喜多隆介、福井 盛一郎、三浦大介
  • Organizer: 2019年秋季第80回応用物理学会学術講演会
• [Presentation] FF‐MOD法によるGd系超伝導薄膜作製におけるEu,Ho,Dy混晶化効果 (2019)
  • Author(s): 横井宏太、喜多隆介、福井 盛一郎、三浦大介
  • Organizer: 2019年秋季第80回応用物理学会学術講演会
• [Presentation] フッ素フリーMOD-REBCO膜作製におけるZr及びRE共添加効果 (2019)
  • Author(s): 喜多隆介、福井 盛一郎、三浦大介
  • Organizer: 2019年秋季第80回応用物理学会学術講演会
• [Presentation] Effect of Zirconium Doping Using a New Metal-organic Material on the Fabrication of Fluorine-free MOD-GdBCO Films (2018)
  • Author(s): K. Kosugi, R. Kita, J. Fukui, O. Miura
  • Organizer: 31th International Symposium on Superconductivity
  • Int'l Joint Research
• [Presentation] (119)Enhancement of critical current densities for Hf and La doped Gd123 films fabricated by fluorine-free MOD method (2018)
  • Author(s): J. Fukui, T. Takahashi, O. Miura, R. Kita
  • Organizer: 31th International Symposium on Superconductivity
  • Int'l Joint Research
• [Presentation] 液相アシスト MOD 法を用いた超伝導薄膜成長における混晶化および添加効果 (2018)
  • Author(s): 穂積 伸哉、喜多隆介、福井 盛一郎、三浦大介
  • Organizer: 第79回応用物理学会学術講演会
• [Presentation] フッ素フリーMOD 法を用いた GdBCO 膜作製における Zr 添加効果 (2018)
  • Author(s): 小杉 航輝、喜多隆介、福井 盛一郎、三浦大介
  • Organizer: 第79回応用物理学会学術講演会
• [Presentation] フッ素フリーMOD法を用いたGdBCO超伝導薄膜作製おけるEu及びHo混晶化効果 (2018)
  • Author(s): 室崎秀太、喜多隆介、福井 盛一郎、三浦大介
  • Organizer: 第79回応用物理学会学術講演会
• [Presentation] Co-doping effects on the fabrication of fluorine-free MOD-GdBCO films (2017)
  • Author(s): S. Kato, R. Kita, N. Kobayashi, O. Miura
  • Organizer: 30th International Symposium on Superconductivity
  • Int'l Joint Research
• [Presentation] Flux pinning properties of hafnium doped Gd123 films fabricated by fluorine-free MOD method with multistage heat treatment (2017)
  • Author(s): N. Kobayashi, J. Fukui, R. Kita, O. Miura
  • Organizer: 30th International Symposium on Superconductivity
  • Int'l Joint Research
• [Presentation] フッ素フリーMOD法を用いたGd系超伝導薄膜おけるEu混晶化効果 (2017)
  • Author(s): 荒田竜介、喜多隆介、小林夏輝、三浦大介
  • Organizer: 第78回応用物理学会学術講演会
• [Presentation] フッ素フリーMOD-GdBCO膜形成におけるAg添加効果 (2017)
  • Author(s): 岸本 宗樹、喜多隆介、小林夏輝、三浦大介
  • Organizer: 第78回応用物理学会学術講演会
• [Presentation] 液相アシストMOD法を用いたGd系超伝導薄膜成長条件の検討 (2017)
  • Author(s): 植村 雅紀、喜多隆介、小林夏輝、三浦大介
  • Organizer: 第78回応用物理学会学術講演会
• [Presentation] フッ素フリーMOD-REBCO膜作製におけるLa, RE共添加効果 (2017)
  • Author(s): 加藤聖也、喜多隆介、小林夏輝、三浦大介
  • Organizer: 第78回応用物理学会学術講演会