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Buffer layers on metal alloy substrates for superconducting tapes

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
An article including a substrate, a layer of an inert oxide material upon the surface of the substrate, a layer of an amorphous oxide or oxynitride material upon the inert oxide material layer, a layer of an oriented cubic oxide material having a rock-salt-like structure upon the amorphous oxide material layer, and a layer of a SrRuO.sub.3 buffer material upon the oriented cubic oxide material layer is provided together with additional layers such as a HTS top-layer of YBCO directly upon the layer of a SrRuO.sub.3 buffer material layer. With a HTS top-layer of YBCO upon at least one layer of the SrRuO.sub.3 buffer material in such an article, J.sub.c's of up to 1.3.times.10.sup.6 A/cm.sup.2 have been demonstrated with projected I.sub.c's of over 200 Amperes across a sample 1 cm wide.
Jia, Quanxi (Los Alamos, NM), Foltyn, Stephen R. (Los Alamos, NM), Arendt, Paul N. (Los Alamos, NM), Groves, James R. (Los Alamos, NM)
10/ 840,693
May 6, 2004
[0002] This invention was made with government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy. The government has certain rights in the invention.