• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Fundamental studies on the practical use of liquid helium-free, medium-temperature superconducting wires

Research Project

Project/Area Number 20H02681
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 31020:Earth resource engineering, Energy sciences-related
Research InstitutionNihon University (2022)
Nagoya University (2020-2021)

Principal Investigator

IIDA Kazumasa  日本大学, 生産工学部, 教授 (90749384)

Co-Investigator(Kenkyū-buntansha) 畑野 敬史  名古屋大学, 工学研究科, 准教授 (00590069)
生田 博志  名古屋大学, 工学研究科, 教授 (30231129)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2022: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2020: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
Keywords鉄系超伝導 / トポタクティック反応 / 水素 / 臨界電流 / 水素置換 / NdFeAs(O,H) / 異方性 / 水素ドーピング / 鉄系超伝導薄膜 / 臨界電流特性 / 粒界
Outline of Research at the Start

昨今のヘリウム危機により,無冷媒かつ強磁場下で運用可能な超伝導線材の開発が強く求められている.さらに希少金属の使用量低減の要請により,希少金属元素の含有量が少ない超伝導線材が好ましい.これらの社会的ニーズに対し,第2の高温超伝導体である鉄系超伝導体を用いた線材の実用化が急務である.しかし,作製された線材の臨界電流は実用化レベルまであと一桁ほど向上させる必要がある.超伝導線材の特性向上を目指すのであれば,対象物質の詳細な粒界特性の理解が必要不可欠である.本研究では鉄系超伝導体の様々な人工単一粒界を作製し,輸送特性・微細構造組織を詳細に評価することで傾角粒界における臨界電流抑制因子の解明を目指す.

Outline of Final Research Achievements

In this study, we have fabricated epitaxial thin films of the high-Tc iron-based superconductor NdFeAs(O,H), in which the oxygen site is partially replaced by hydrogen, and evaluated the physical properties of NdFeAs(O,H). As a result, NdFeAs(O,H) has higher superconducting properties (e.g. critical current density Jc, irreversibility field and low anisotropy), than NdFeAs(O,F). However, the decay of Jc with external magnetic fields was large, hence it is necessary to improve the in-field Jc. Although the inter-grain Jc has already begun to decay at a grain boundary angle of 6 degree, the absolute value was 6.2 MA/cm2, which is more than one order of magnitude higher than that in iron-based superconductors. Therefore, NdFeAs(O,H) is a suitable material for application among iron-based superconductors.

Academic Significance and Societal Importance of the Research Achievements

鉄系超伝導体の中でも最も転移温度の高いLnFeAs(O,H) (Ln: ランタノイド元素)の物性を明らかにすることは,これまで大きな単結晶が作製されなかったため遅れていた.そのような中,NdFeAs(O,H)エピタキシャル薄膜を作製し,物性を明らかにしたことは学術的に意義は大きい.さらに応用研究で重要となる臨界電流特性などの評価を行なったことは工学的にも意義があると言える.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (18 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (12 results) (of which Int'l Joint Research: 7 results,  Invited: 2 results)

  • [Int'l Joint Research] Karlsruhe Institute of Technology(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Karlsruhe Institute of Technology(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Recent progress on epitaxial growth of Fe-based superconducting thin films2023

    • Author(s)
      Iida Kazumasa、Haenisch Jens、Hata Satoshi、Yamamoto Akiyasu
    • Journal Title

      Superconductor Science and Technology

      Volume: 1 Issue: 6 Pages: 1-1

    • DOI

      10.1088/1361-6668/acccb2

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Inter- to intra-layer resistivity anisotropy of NdFeAs(O,H) with various hydrogen concentrations2022

    • Author(s)
      Chen M. Y.、Iida K.、Kondo K.、H?nisch J.、Hatano T.、Ikuta H.
    • Journal Title

      Physical Review Materials

      Volume: 6 Issue: 5 Pages: 054802-054802

    • DOI

      10.1103/physrevmaterials.6.054802

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High Jc and low anisotropy of hydrogen doped NdFeAsO superconducting thin film2021

    • Author(s)
      Iida Kazumasa、Haenisch Jens、Kondo Keisuke、Chen Mingyu、Hatano Takafumi、Wang Chao、Saito Hikaru、Hata Satoshi、Ikuta Hiroshi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 5636-5636

    • DOI

      10.1038/s41598-021-85216-3

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] NdFeAs(O,H) epitaxial thin films with high critical current density2020

    • Author(s)
      Kondo Keisuke、Motoki Seiya、Hatano Takafumi、Urata Takahiro、Iida Kazumasa、Ikuta Hiroshi
    • Journal Title

      Superconductor Science and Technology

      Volume: 33 Issue: 9 Pages: 09LT01-09LT01

    • DOI

      10.1088/1361-6668/aba353

    • NAID

      120006948917

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 鉄系超伝導体 NdFeAs(O,H)の異方性の水素置換量依存性2023

    • Author(s)
      日比野 絢斗, 今中 宏哉, 吉川 淳朗, 櫻井 謙真, 畑野 敬史, 生田 博志
    • Organizer
      応用物理学会 2023年第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ミスカット基板を用いたNdFeAs(O,H)薄膜の抵抗率異方性の測定2022

    • Author(s)
      陳 明宇, 近藤 圭祐, 畑野 敬史, 浦田 隆広, 飯田 和昌, 生田 博志
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Resistivity anisotropy of NdFeAs(O,H) thin films grown on vicinal-cut substrates2021

    • Author(s)
      M. Y. Chen , K. Iida , K. Kondo, T. Hatano, H. Ikuta
    • Organizer
      Materials Research Meeting 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Anisotropy of the in-plane and out-of-plane resistivity of F- and H-doped NdFeAsO2021

    • Author(s)
      Mingyu Chen, Keisuke Kondo, Takafumi Hatano, Takahiro Urata, Kazumasa Iida and Hiroshi Ikuta
    • Organizer
      The 34 th Internation Symposium on Superconductivity (ISS2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Transport Anisotropy of NdFeAs(O,F) and NdFeAs(O,H)2021

    • Author(s)
      Mingyu Chen, Keisuke Kondo, Takafumi Hatano, Takahiro Urata, Kazumasa Iida and Hiroshi Ikuta
    • Organizer
      International Conference on Quantum Liquid Crystals 2021 (QLC2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Resistivity anisotropy of NdFeAs(O,H) thin films grown on vicinal-cut substrates2021

    • Author(s)
      Mingyu Chen, Keisuke Kondo, Takafumi Hatano, Kazumasa Iida, Hiroshi Ikuta
    • Organizer
      The 15th European Conference on Applied Superconductivity (EUCAS)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] トポタクティック反応による鉄系超伝導体NdFeAs(O,H)薄膜の作製と物性評価2021

    • Author(s)
      畑野敬史,近藤圭祐,本木聖也,浦田隆広,飯田和昌,生田博志
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 近藤圭祐,陳明宇,畑野敬史,飯田和昌,生田博志2021

    • Author(s)
      NdFeAsO薄膜の電気輸送特性と電子濃度依存性
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] The self-field critical current, the superfluid density and the upper critical field in iron-based superconductors: p-wave scenario2021

    • Author(s)
      Evgeny Talantsev, Kazumasa Iida
    • Organizer
      Applied Superconductivity Conference 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] NdFeAs(O,F) epitaxial thin films with high critical current density2021

    • Author(s)
      Kazumasa Iida, Keisuke Kondo, Seiya Motoki, Mingyu Chen, Takafumi Hatano, Jens Haenisch, Chiara Tarantini, Jan Jaroszysnki, Chao Wang, Hikaru Saito, Satoshi Hata, Hiroshi Ikuta
    • Organizer
      Applied Superconductivity Conference 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of Hydrogen Doping on the Superconducting Properties of NdFeAsO2021

    • Author(s)
      K. Iida, K. Kondo, M. Chen, T. Hatano, C. Wang, H. Saito, S. Hata, J. Haenisch, H. Ikuta
    • Organizer
      The 33rd International Symposium on Superconductivity
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Superconducting properties of heavily electron doped NdFeAsO epitaxial thin films2021

    • Author(s)
      K. Iida, K. Kondo, M. Chen, T. Hatano, C. Wang, H. Saito, S. Hata, H. Ikuta
    • Organizer
      30th Annual Meeting of MRS-J (International Symposium)
    • Related Report
      2020 Annual Research Report
    • Invited

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi