Incorporation of double artificial pinning centers in YBa 2Cu3O7-d films

P. Mele, K. Matsumoto, T. Horide, A. Ichinose, Masashi Mukaida, Y. Yoshida, S. Horii, R. Kita

    研究成果: ジャーナルへの寄稿学術誌査読

    35 被引用数 (Scopus)

    抄録

    YBa2Cu3O7-x+BaZrO3+Y 2O3 (YBCO+BaZrO3+Y2O3) mixed films were prepared on SrTiO3/MgO substrates by pulsed-laser deposition, with an YBCO+BaZrO3 target with a thin Y 2O3 sector stuck on the top. The pinning properties for the double-doped YBCO+BaZrO3+Y2O3 thin film were enhanced in comparison with those of a pure YBCO sample prepared in the same experimental conditions. The maximum global pinning forces Fp for the double-doped sample are 12.8GN m-3 near 3 T at 77 K, 46.3 GN m-3 near 4 T at 65 K, and 122 GN m-3 near 9 T at 40 K. In the double-doped sample the angular dependence of Jc showed a broad peak at , due to the flux pinning by c-axis correlated defects, combined with a plateau, due to the flux pinning by isotropic pinning centers. Both BaZrO 3 nanorods parallel to the c-axis and Y2O3 nanoparticles randomly dispersed inside the YBCO matrix were consistently observed in the cross sectional transmission electron microscopy images.

    本文言語英語
    論文番号015019
    ジャーナルSuperconductor Science and Technology
    21
    1
    DOI
    出版ステータス出版済み - 1月 1 2008

    !!!All Science Journal Classification (ASJC) codes

    • セラミックおよび複合材料
    • 凝縮系物理学
    • 金属および合金
    • 電子工学および電気工学
    • 材料化学

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