High-critical-current-density epitaxial films of SmBa2Cu 3O7-x in high fields

Yutaka Yoshida, Kaname Matsumoto, Yusuke Ichino, Masakazu Itoh, Ataru Ichinose, Shigeru Horii, Masashi Mukaida, Yoshiaki Takai

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    51 Citations (Scopus)

    Abstract

    The critical current density (Jc) and irreversibility field (Birr) of epitaxial SmBa2Cu3O7-x (SmBCO) films are reported. The Birr and Jc of these films deposited on MgO(100) substrates by pulsed-laser deposition depend critically on the substrate temperature. The use of a thin SmBCO seed layer grown at a high substrate temperature enabled us to obtain fully c-axis-oriented SmBCO films at relatively low temperatures, resulting in a high Jc of 1.7 × 105 A/cm2 of B ∥ c at 5 T and 77 K. This value is as high as that of the optimized NbTi superconducting wires achieved at 5 T and 4.2 K.

    Original languageEnglish
    Pages (from-to)L129-L132
    JournalJapanese Journal of Applied Physics
    Volume44
    Issue number1-7
    DOIs
    Publication statusPublished - 2005

    All Science Journal Classification (ASJC) codes

    • General Engineering
    • General Physics and Astronomy

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