Controlled nanoparticulate flux pinning structures in RE1+xBa2-xCu3Oy films

Y. Yoshida, K. Matsumoto, M. Miura, Y. Ichino, Y. Takai, A. Ichinose, M. Mukaida, S. Horii

    研究成果: ジャーナルへの寄稿学術誌査読

    10 被引用数 (Scopus)


    Practical utilization of a coated conductor as a superconducting magnet operating at 77 K requires not only an improvement in the Jc at self field but also suppression of any decline in the Jc value in the magnetic field. In this study, nanoparticles and crystalline defects were created as the flux pinning in a high-Jc Sm1+xBa2-xCu3Oy film during a film deposition process. We obtained extremely high-Jc values, Jc = 0.37 MA/cm2 (77 K, B∥c, B = 5 T) and Jc = 0.1 MA/cm2 (77 K, B∥c, B = 8 T). Cross-sectional low magnification and high-resolution TEM micrographs confirm the presence of Sm-enriched nanoparticles (x value > 0.2) embedded in the SmBCO lattice; typical particle sizes were 15 nm and particle density about 1010-1011 particles cm-2. We discussed about the elemental mapping of the high-Jc SmBCO films measured by TEM-EDX.

    ジャーナルPhysica C: Superconductivity and its applications
    出版ステータス出版済み - 10月 1 2006

    !!!All Science Journal Classification (ASJC) codes

    • 電子材料、光学材料、および磁性材料
    • 凝縮系物理学
    • エネルギー工学および電力技術
    • 電子工学および電気工学


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