Critical currents Ic(77 K) > 350 A/cm-width achieved in ex situ YBCO coated conductors using a faster conversion process

R. Feenstra, A. A. Gapud, F. A. List, E. D. Specht, D. K. Christen, T. G. Holesinger, D. M. Feldmann

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    34 Scopus citations

    Abstract

    Implementation of improved processing for BaF29 ex situ YBCO coatings from e-beam evaporated precursors enables faster conversion with rates up to 12 Å /s and critical currents Ic at 77 K greater than 350 A/cm-width on a RABiTS template. Details of the faster processing are described and compared to an earlier slower process. A linear relation between I c and YBCO layer thickness provides evidence of new opportunities to further improve Ic.

    Original languageEnglish
    Pages (from-to)2803-2807
    Number of pages5
    JournalIEEE Transactions on Applied Superconductivity
    Volume15
    Issue number2 PART III
    DOIs
    StatePublished - Jun 2005

    Funding

    Manuscript received October 5, 2004. This work was supported by the U.S. Department of Energy under contract DE-AC05-00OR22725 with the Oak Ridge National Laboratory, managed by UT-Battelle, LLC. R. Feenstra, A. A. Gapud, F. A. List, E. D. Specht, and D. K. Christen are with the Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA (e-mail: [email protected]). T. G. Holesinger is with the Los Alamos National Laboratory, Los Alamos, NM 87545 USA (e-mail: [email protected]). D. M. Feldmann is with the Applied Superconductivity Center, University of Wisconsin, WI 53706 USA (e-mail: [email protected]). Digital Object Identifier 10.1109/TASC.2005.848217

    Keywords

    • BaF ex situ process
    • Critical currents
    • Thickness dependent effects
    • Vortex pinning
    • YBCO coated conductors

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