SUBSTRATE FOR OXIDE SUPERCONDUCTOR AND PROCESS FOR PRODUCING SAME, AND OXIDE SUPERCONDUCTOR AND PROCESS FOR PRODUCING SAME

摘要

A substrate for an oxide superconductor including: a metal base; an interlayer of MgO formed on the metal base by ion beam assisted deposition method (IBAD METHOD); and a cap layer that is formed directly on the interlayer and has a higher degree of crystal orientation than that of the interlayer, in which the interlayer of MgO is subjected to a humidity treatment prior to formation of the cap layer.