Field-induced pinning centers of YBa2Cu3O7-y superconducting thick film prepared by liquid phase epitaxy

Tasuku Kitamura, Satoshi Taniguchi, Yoshihiro Sugawara, Yuichi Ikuhara, Yuh Shiohara, Izumi Hirabayashi, Shoji Tanaka

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    Superconducting YBa2Cu3O7-y films were fabricated by liquid phase epitaxy (LPE) on MgO (100) and NdGaO3 (110) single-crystalline substrates. The film of 10 μm thickness on the MgO substrate shows a high critical current density over 105 A/cm2 at 77.3 K. This film includes the stacking faults that were introduced due to the-large lattice mismatch between the YBCO film and the MgO substrate. We measured Jc-B characteristics of this high Jc and found the peak effect: enhancing Jc with increasing field. On the other hand, Jc of the films on the NdGaO3 substrate is comparably low, and we have a microstructure without stacking faults. These results suggest that the stacking faults in the films on MgO substrates behave as field-induced pinning centers at 77.3 K.

    Original languageEnglish
    Pages (from-to)64-72
    Number of pages9
    JournalPhysica C: Superconductivity and its applications
    Volume256
    Issue number1-2
    DOIs
    Publication statusPublished - 1996 Jan 1

    ASJC Scopus subject areas

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

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