Development of High-performance YBCO Tapes Containing Hybrid APCs

DOI Web Site 13 References
  • HORIDE Tomoya
    Department of Materials Science and Engineering,Kyushu Institute of Technology
  • KAWAMURA Takehiro
    Department of Materials Science and Engineering,Kyushu Institute of Technology
  • HARA Kazuki
    Department of Materials Science and Engineering,Kyushu Institute of Technology
  • MATSUMOTO Kaname
    Department of Materials Science and Engineering,Kyushu Institute of Technology
  • ICHINOSE Ataru
    Central Research Institute of Electric Power Industtry
  • YOSHIZUMI Masateru
    International Superconductivity Technology Center
  • IZUMI Teruo
    International Superconductivity Technology Center
  • SHIOHARA Yuh
    International Superconductivity Technology Center

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  • ハイブリッドAPC による高性能YBCO テープ線材の開発
  • ハイブリッド APC ニ ヨル コウセイノウ YBCO テープ センザイ ノ カイハツ

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Description

YBa2Cu3O7(YBCO) films containing hybrid artificial pinning centers(APCs) of BaSnO3(BSO) nanorods and Y2O3 nanoparticles were fabricated on ion beam assisted deposition(IBAD)-MgO substrates. By changing contents of BSO and Y2O3, critical current density (Jc) properties were controlled. The YBCO film containing high density of BSO and Y2O3 exhibited high Jc in high magnetic fields, and an isotropic angular dependence of Jc was obtained in a low magnetic field in a film containing moderate density of nanorods and nanoparticles, showing that hybrid APCs have the potential to improve Jc performance. BSO content is the most crucial factor for Fp,max in a magnetic field parallel to the c-axis, and Y2O3 nanoparticles can significantly improve Fp,max in a magnetic field tilted from the c-axis. Advanced control of nanorods and nanoparticles is needed for realization of higher Jc performance.

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