Effects of the APC materials on c-axis correlated pinning effects in a-axis oriented Y123/2D APC multilayer films

M. Takamura, M. Mukaida, S. Horii, A. Ichinose, R. Kita, M. Namba, S. Awaji, K. Watanabe, K. Matsumoto, Y. Yoshida, R. Teranishi, K. Yamada, N. Mori

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    For a-axis oriented and c-axis in-plane aligned YBa2Cu3O7-δ/artificial pinning center (Y123/APC) alternately-layered thin films, effects of the APC materials on the multilayer structures are discussed. Pr123, (Y1-xPrx)123 and Gd2CuO4(Gd214) were used as APCs. The multilayer structure was observed for Y123/Pr123 films and Y123/Gd214 films. However, some grains are also grown in the Y123/Gd214 film. For the Y123/Pr123 multilayer film, each Pr123 layer act as two-dimensional APCs (2D APCs) in the magnetic field angular dependences of the critical current density. The growth mechanism of the multilayer structure in the Y123/2D APC films is discussed by a transmission electron microscopy and an atomic force microscope. It is found that two conditions are needed to obtain the c-axis correlated pinning effects by 2D APC in the a-axis oriented and c-axis in-plane aligned Y123/APC multilayer films: the same structure as Y123; Y-free APC materials.

    Original languageEnglish
    Pages (from-to)1545-1549
    Number of pages5
    JournalPhysica C: Superconductivity and its applications
    Volume469
    Issue number15-20
    DOIs
    Publication statusPublished - Oct 15 2009

    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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