Fundamental studies for realizing the 3rd generation superconducting wires

• Project/Area Number: 16H04646
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Energy engineering
• Research Institution: Nagoya University
• Principal Investigator: Iida Kazumasa 名古屋大学, 工学研究科, 准教授 (90749384)
• Co-Investigator(Kenkyū-buntansha): 生田 博志 名古屋大学, 工学研究科, 教授 (30231129)
• Research Collaborator: Hänisch Jens ; Holzapfel Bernhard ; Tarantini Chiara ; Jaroszynski Jan ; Larbalestier David
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000); Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2017: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000); Fiscal Year 2016: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
• Keywords: 鉄系超伝導薄膜 / 粒界特性 / 臨界電流特性 / テープ線材 / 分子線エピタキシー / 鉄系超伝導体薄膜 / 積層欠陥 / 抵抗率異方性 / オフ基板 / 鉄系超伝導体 / エピタキシャル薄膜 / 超伝導線材 / オキシプニクタイド / 薄膜 / 粒界接合 / 臨界角度 / 臨界電流密度 / ミスカット基板 / プロトン照射 / 超伝導材料 / 電子・電気材料 / MBE / エピタキシャル

Outline of Final Research Achievements

Among the iron-based superconductors, NdFeAs(O,F) and BaFe2(As,P)2 were selected to characterize their intra- and inter-grain properties. The grain boundary angle at which the critical current density decreases exponentially of NdFeAs(O,F) is around 9 degree, which is almost the same value as other iron-based superconductors like Ba(Fe,Co)2As2 and Fe(Se,Te). Additionally, in BaFe2(As,P)2, it was clarified that low-angle grain boundaries act as flux pinning centers and, hence, improve the critical current characteristics.

Academic Significance and Societal Importance of the Research Achievements

鉄系超伝導体の粒界特性を明らかにすることは超伝導線材開発だけでなく，バルク磁石開発にも重要な知見となる。今回，鉄系超伝導体の中で最初に発見されたLnFeAs(O,F)[Ln: ランタノイド元素]の粒界特性を明らかにすることで，粒界における超伝導臨界電流の低下が始まる粒界角度(臨界角度)が，代表的な鉄系超伝導体であるBa(Fe,Co)2As2やFe(Se,Te)とほぼ同じであった。従って，鉄系超伝導体の超伝導ギャップ対称性は，全ての系で同じである可能性がある。工学的には，銅酸化物超伝導体に比べて，臨界角度が約2倍大きく，面内配向度の制限が緩くなるので線材作製時におけるコスト低減につながる。

Research Products

• [Int'l Joint Research] Karlsruhe Institute of Technology(ドイツ)
• [Int'l Joint Research] National High Field Magnetic Laboratory(米国)
• [Int'l Joint Research] National High Field Magnet Laboratory(米国)
• [Int'l Joint Research] Karlsruhe Institute of Technology/IFW Dresden(Germany)
• [Int'l Joint Research] National High Magnetic Field Laboratory(米国)
• [Int'l Joint Research] Karlsruhe Institute of Technology/IFW Dresden/Technical University Dresden(Germany)
• [Journal Article] Novel method to study strain effect of thin films using a piezoelectric-based device and a flexible metallic substrate (2019)
  • Author(s): Iida Kazumasa、Sugimoto Yuwa、Hatano Takafumi、Urata Takahiro、Langer Marco、Holzapfel Bernhard、Haenisch Jens、Ikuta Hiroshi
  • Journal Title: Applied Physics Express Volume: 12 Issue: 1 Pages: 016503-016503
  • DOI: 10.7567/1882-0786/aaf6e6
  • NAID: 120006623786
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Grain boundary characteristics of oxypnictide NdFeAs(O,F) superconductors (2019)
  • Author(s): Kazumasa Iida, Taito Omura, Takuya Matsumoto, Takafumi Hatano, Hiroshi Ikuta
  • Journal Title: Superconductor Science and Technology Volume: 印刷中 Issue: 7 Pages: 074003-074003
  • DOI: 10.1088/1361-6668/ab1660
  • NAID: 120006718406
  • Peer Reviewed / Open Access
• [Journal Article] Fe-based superconducting thin films - Preparation and tuning of superconducting properties (2019)
  • Author(s): Jens Haenisch, Kazumasa Iida, Ruben Huehne, Chiara Tarantini
  • Journal Title: Superconductor Science and Technology Volume: 印刷中 Issue: 9 Pages: 093001-093001
  • DOI: 10.1088/1361-6668/ab1c00
  • Peer Reviewed / Open Access
• [Journal Article] Vortex glass-liquid transition and activated flux motion in an epitaxial, superconducting NdFeAs(O,F) thin film (2018)
  • Author(s): Haenisch J.、Iida K.、Ohmura T.、Matsumoto T.、Hatano T.、Langer M.、Kauffmann-Weiss S.、Ikuta H.、Holzapfel B.
  • Journal Title: MRS Communications Volume: 8 Issue: 4 Pages: 1433-1438
  • DOI: 10.1557/mrc.2018.207
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Fe-based superconducting thin films on metallic substrates: Growth, characteristics, and relevant properties (2018)
  • Author(s): Iida Kazumasa、Haenisch Jens、Tarantini Chiara
  • Journal Title: Applied Physics Reviews Volume: 5 Issue: 3 Pages: 031304-031304
  • DOI: 10.1063/1.5032258
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Universal scaling behavior of the upper critical field in strained FeSe0.7Te0.3 thin films (2018)
  • Author(s): Yuan Feifei、Grinenko Vadim、Iida Kazumasa、Richter Stefan、Pukenas Aurimas、Skrotzki Werner、Sakoda Masahito、Naito Michio、Sala Alberto、Putti Marina、Yamashita Aichi、Takano Yoshihiko、Shi Zhixiang、Nielsch Kornelius、Huehne Ruben
  • Journal Title: New Journal of Physics Volume: 20 Issue: 9 Pages: 093012-093012
  • DOI: 10.1088/1367-2630/aade66
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Recent progress in thin-film growth of Fe-based superconductors: superior superconductivity achieved by thin films (2018)
  • Author(s): Sakoda Masahito、Iida Kazumasa、Naito Michio
  • Journal Title: Superconductor Science and Technology Volume: 31 Issue: 9 Pages: 093001-093001
  • DOI: 10.1088/1361-6668/aabddb
  • Peer Reviewed / Open Access
• [Journal Article] Effect of α-particle irradiation on a NdFeAs(O,F) thin film (2018)
  • Author(s): Tarantini C、Iida K、Sumiya N、Chihara M、Hatano T、Ikuta H、Singh R K、Newman N、Larbalestier D C
  • Journal Title: Superconductor Science and Technology Volume: 31 Issue: 3 Pages: 034002-034002
  • DOI: 10.1088/1361-6668/aaa821
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Deposition and properties of Fe(Se,Te) thin films on vicinal CaF2 substrates (2017)
  • Author(s): Bryja Hagen、Huehne Ruben、Iida Kazumasa、Molatta Sebastian、Sala Alberto、Putti Marina、Schultz Ludwig、Nielsch Kornelius、Haenisch Jens
  • Journal Title: Superconductor Science and Technology Volume: 30 Issue: 11 Pages: 115008-115008
  • DOI: 10.1088/1361-6668/aa8421
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The influence of the in-plane lattice constant on the superconducting transition temperature of FeSe0.7Te0.3 thin films (2017)
  • Author(s): Yuan Feifei、Iida Kazumasa、Grinenko Vadim、Chekhonin Paul、Pukenas Aurimas、Skrotzki Werner、Sakoda Masahito、Naito Michio、Sala Alberto、Putti Marina、Yamashita Aichi、Takano Yoshihiko、Shi Zhixiang、Nielsch Kornelius、Huehne Ruben
  • Journal Title: AIP Advances Volume: 7 Issue: 6 Pages: 065015-065015
  • DOI: 10.1063/1.4989566
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dimensional Crossover in Fe-based Superconductors (2017)
  • Author(s): 飯田 和昌、Jens HAENISCH、内藤 方夫
  • Journal Title: TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) Volume: 52 Issue: 6 Pages: 443-447
  • DOI: 10.2221/jcsj.52.443
  • NAID: 130006247582
  • ISSN: 0389-2441, 1880-0408
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Selective mass enhancement close to the quantum critical point in BaFe2(As1-xPx)2 (2017)
  • Author(s): Grinenko V., Iida K., Kurth F., Efremov D. V., Drechsler S.-L., Cherniavskii I., Morozov I., Haenisch J., Foerster T., Tarantini C., Jaroszynski J., Maiorov B., Jaime M., Yamamoto A., Nakamura I., Fujimoto R., Hatano T., Ikuta H., Huehne R.
  • Journal Title: Scientific Reports Volume: 7 Issue: 1 Pages: 4589-4589
  • DOI: 10.1038/s41598-017-04724-3
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] High-field transport properties of a P-doped BaFe2As2 film on technical substrate (2017)
  • Author(s): K. Iida, H. Sato, C. Tarantini, J. Hänisch, J. Jaroszynski, H. Hiramatsu, B. Holzapfel, and H. Hosono
  • Journal Title: Sci. Rep. Volume: 7 Issue: 1
  • DOI: 10.1038/srep39951
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Superconducting properties of Ba(Fe1-xNix)2As2 thin films in high magnetic fields (2017)
  • Author(s): S. Richter, F. Kurth, K. Iida, K. Pervakov, A. Pukenas, C. Tarantini, J. Jaroszynski, J. Haenisch, V. Grinenko, W. Skrotzki, K. Nielsch, R. Huehne
  • Journal Title: Applied Physics Letters Volume: 110 Issue: 2
  • DOI: 10.1063/1.4973522
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] 傾斜基板上に成長したNdFeAs(O,F)薄膜の臨界電流特性 (2019)
  • Author(s): 飯田和昌，松本拓也，近藤圭介，畑野敬史，生田博志
  • Organizer: 第66回応用物理学会春季学術講演会
• [Presentation] Electronic Anisotropy of NdFeAs(O,F) Epitaxial Thin Films Grown on Vicinal- Cut MgO Substrates (2018)
  • Author(s): Takuya Matsumoto, Keisuke Kondo, Takafumi Hatano, Takahiro Urata, Kazumasa Iida, Hiroshi Ikuta
  • Organizer: 31th International Symposium on Superconductivity
  • Int'l Joint Research
• [Presentation] Grain boundary characteristics of NdFeAs(O,F) superconductors (2018)
  • Author(s): Kazumasa Iida, Taito Omura, Takuya Matsumoto, Takafumi Hatano, Hiroshi Ikuta
  • Organizer: Applied Superconductivity Conference
  • Int'l Joint Research
• [Presentation] ミスカットMgO基板上に成膜したNdFeAs(O,F)薄膜の輸送特性Ⅱ (2018)
  • Author(s): 松本拓也，近藤圭介，畑野敬史，浦田隆広，飯田和昌，生田博志
  • Organizer: 第79回応用物理学会秋季学術講演会
• [Presentation] Flux pinning in oxypnictide thin films (2018)
  • Author(s): K. Iida, C. Tarantini, J. Haenisch, F. Kurth, J. Jaroszynski, T. Omura, T. Matsumoto, T. Urata, T. Hatano, S. Meyer, S. Kauffmann-Weiss, B. Holzapfel, D. C. Larbalestier, H. Ikuta
  • Organizer: 8th Forum on New Materials, CIMTEC2018
  • Int'l Joint Research
• [Presentation] Misorientaion angle dependence of inter-grain Jc for NdFeAs(O,F) (2018)
  • Author(s): K. Iida, T. Omura, T. Matsumoto, T. Hatano, H. Ikuta, S. Kaufmann-Weiss, B. Holzapfel, J. Haenisch, T. Boll, R. Schneider
  • Organizer: 6th ICSM2018
  • Int'l Joint Research
• [Presentation] 形状効果によるNdFeAs(O,F)薄膜のピン力向上 (2018)
  • Author(s): 飯田 和昌, カウフマンーヴァイス サンドラ, 大村 泰斗, 松本 拓也, タランティーニ キアラ, ヤロスンスキー ヤン, 畑野 敬史, トーベン ボール, ランガー マルコ, ホルツアプフェル バーンハルド, ヘーニッシュ イェンツ, 生田 博志
  • Organizer: 第65回応用物理学会春季学術講演会
• [Presentation] オキシプニクタイドNdFeAs(O,F)超伝導体の粒界特性 (2018)
  • Author(s): 飯田 和昌, 大村 泰斗, 松本 拓也, 畑野 敬史, 生田 博志
  • Organizer: 第65回応用物理学会春季学術講演会
• [Presentation] ミスカットMgO基板上に成膜したNdFeAs(O,F)薄膜の抵抗率の異方性 (2018)
  • Author(s): 松本拓也, 大村泰斗, 畑野敬史, 浦田隆広, 飯田和昌, 生田博志
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] Intrinsic vortex pinning and critical current scaling in NdFeAs(O,F) (2017)
  • Author(s): 飯田和昌
  • Organizer: IWRS2017
  • Int'l Joint Research / Invited
• [Presentation] Practical-level performance of P-doped BaFe2As2 films on technical substrates for high-field-magnet applications (2017)
  • Author(s): K. Iida, H. Sato, C. Tarantini, J. Haenisch, J. Jaroszynski, H. Hiramatsu, B. Holzapfel, H. Hosono
  • Organizer: CEC-ICMC 2017
  • Int'l Joint Research
• [Presentation] Electric double layer transistor in NdFeAsO and grain boudary junctions of NdFeAs(O,F) (2017)
  • Author(s): Kazumasa Iida
  • Organizer: 2nd Workshop IMS2017, Initerant magnetsim and superconductivity
  • Int'l Joint Research / Invited
• [Presentation] ミスカットMgO基板上に成膜したNdFeAs(O,F)薄膜の輸送特性 (2017)
  • Author(s): 松本 拓也, 大村 泰斗, 畑野 敬史, 浦田 隆広, 飯田 和昌, 生田 博志
  • Organizer: 第78回応用物理学会秋季学術講演会
• [Presentation] Transport Properties of NdFeAs(O,F) Epitaxial Thin Films Grown on Vicinal-Cut MgO Substrates (2017)
  • Author(s): T. Matsumoto, T. Omura, T. Hatano, K. Iida, H. Ikuta
  • Organizer: 30th International Symposium on Superconductivity
  • Int'l Joint Research
• [Presentation] FABRICATION OF GRAIN BOUNDARY JUNCTIONS USING NdFeAs(O,F) SUPERCONDUCTING THIN FILMS (2017)
  • Author(s): T. Omura, T. Matsumoto, T. Hatano, K. Iida, H. Ikuta
  • Organizer: 30th International Symposium on Superconductivity
  • Int'l Joint Research
• [Presentation] Epitaxial NdFeAs(O,F) Films By Molecular Beam Epitaxy: Influence Of Film Thickness And Surface Morphology On Superconducting Properties (2017)
  • Author(s): S. Kauffmann-Weiss, K. Iida, T. Matsumoto, T. Ohmura, T. Hatano, T. Boll, M. Langer, B. Holzapfel, H. Ikuta, J. Haenisch
  • Organizer: 30th International Symposium on Superconductivity
  • Int'l Joint Research
• [Presentation] Tracing the s±-symmetry in Co-doped BaFe2As2 by controlled disorder (2016)
  • Author(s): Kazumasa Iida
  • Organizer: International Workshop on Superconductivity and Related Functional Materials 2016
  • Place of Presentation: つくば
  • Year and Date: 2016-12-19
  • Invited
• [Presentation] NdFeAs(O,F)超伝導薄膜を用いた粒界接合の作製及び評価 (2016)
  • Author(s): 大村泰斗，松本拓也，荒井健太，畑野敬史，飯田和昌，生田博志
  • Organizer: 第77回応用物理学会秋季学術講演会
  • Place of Presentation: 新潟
  • Year and Date: 2016-09-13
• [Presentation] Tracing the s±-symmetry in Fe-based superconductors by inducing controlled disorder (2016)
  • Author(s): K. Iida, M. Schilling, S. Zapf, A. Baumgartner, E. Zhukova, M. Dressel, B. Gorshunov, V. Drain, K. Misten, D. Efremov, O. Dolgov
  • Organizer: Applied Superconductivity 2016
  • Place of Presentation: Denver, USA
  • Year and Date: 2016-09-04
  • Int'l Joint Research
• [Presentation] オキシプニクタイド超伝導薄膜: 作製と評価 (2016)
  • Author(s): 飯田和昌
  • Organizer: 低温工学東北・北海道支部/第2回材料研究会 合同シンポジウム
  • Place of Presentation: 北海道
  • Year and Date: 2016-08-02
  • Invited