Incorporation of double artificial pinning centers in YBa2Cu3O7-δ films

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

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    10 Citations (Scopus)


    YBa2Cu3O7-x + BaZrO3 + Y2O3 (YBCO + BaZrO3 + Y2O3) mixed films were prepared on SrTiO3/MgO substrates by pulsed-laser deposition from an YBCO + BaZrO3 target with a thin Y2O3 sector stuck on the top. The pinning properties for the double-doped YBCO + BaZrO3 + Y2O3 thin film were enhanced in comparison with a pure YBCO sample prepared in the same experimental conditions. The maximum global pinning forces FP for the double-doped sample are 12.8 GN/m3 at 77K, 46.3 GN/m3 at 65K, and 122 GN/m3 at 40K. In the double-doped sample, the angular dependence of Jc showed a broad peak at B//c due to the flux pinning by c-axis correlated defects, combined with a plateau, due to the flux pinning by isotropic pinning centres. Consistently, both BaZrO3 nanorods parallel to the c-axis and Y2O3 nanoparticles randomly dispersed inside the YBCO matrix were observed in TEM images.

    Original languageEnglish
    Pages (from-to)1631-1634
    Number of pages4
    JournalPhysica C: Superconductivity and its applications
    Issue number15-20
    Publication statusPublished - Sept 15 2008

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Energy Engineering and Power Technology
    • Electrical and Electronic Engineering


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