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Substrate structure for growth of highly oriented and/or epitaxial layers thereon

United States Patent

6,921,741
July 26, 2005
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
A composite substrate structure including a substrate, a layer of a crystalline metal oxide or crystalline metal oxynitride material upon the substrate, a layer of an oriented cubic oxide material having a rock-salt-like structure upon the crystalline metal oxide or crystalline metal oxynitride material layer is provided together with additional layers such as one or more layers of a buffer material upon the oriented cubic oxide material layer. J.sub.c 's of 2.3.times.10.sup.6 A/cm.sup.2 have been demonstrated with projected I.sub.c 's of 320 Amperes across a sample 1 cm wide for a superconducting article including a flexible polycrystalline metallic substrate, an inert oxide material layer upon the surface of the flexible polycrystalline metallic substrate, a layer of a crystalline metal oxide or crystalline metal oxynitride material upon the layer of the inert oxide material, a layer of an oriented cubic oxide material having a rock-salt-like structure upon the crystalline metal oxide or crystalline metal oxynitride material layer, a layer of a buffer material upon the oriented cubic oxide material layer, and, a top-layer of a high temperature superconducting material upon the layer of a buffer material.
Arendt; Paul N. (Los Alamos, NM), Foltyn; Stephen R. (Los Alamos, NM), Groves; James R. (Los Alamos, NM), Jia; Quanxi (Los Alamos, NM)
The Regents of the University of California (Los Alamos, NM)
10/ 359,808
20030144150
February 7, 2003
STATEMENT REGARDING FEDERAL RIGHTS 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.