Buffer layers for REBCO films for use in superconducting devices

摘要

A superconducting article includes a substrate having a biaxially textured surface. A biaxially textured buffer layer, which can be a cap layer, is supported by the substrate. The buffer layer includes a double perovskite of the formula A2B′B″O6, where A is rare earth or alkaline earth metal and B′ and B″ are different transition metal cations. A biaxially textured superconductor layer is deposited so as to be supported by the buffer layer. A method of making a superconducting article is also disclosed.

主权项

1. A superconducting article comprising:
a substrate having a biaxially textured surface, wherein said biaxially textured substrate is selected from the group consisting of single crystal substrates, RABiTS and IBAD substrates; an epitaxial, biaxially textured buffer layer directly on the substrate, the buffer layer comprising a double perovskite of the formula A2B′B″O6, where A is rare earth or alkaline earth metal and B′ and B″ are different rare earth or transition metal cations; and, an epitaxial, biaxially textured superconductor layer directly on the buffer layer.