Oxide superconductor layer and its production method

摘要

The object of the present invention is to provide an oxide superconductor having superior strength and superconductor characteristics, and its production method. In order to achieve the above object, the present invention provides an oxide superconductor layer (d) obtained by a method in which a raw material gas of an oxide superconductor is chemically reacted on a base material provided with an Ag layer (b) having a rolling texture formed on at least one side of a base material, a diffusion layer (c) in which Cu is diffused in Ag is formed on the surface of the above base material, and the above oxide superconductor layer is formed on the above diffusion layer; furthermore, an oxide superconductor comprising the sequential generation of a plurality of layers of oxide superconductor containing Cu by CVD on a base material provided with an Ag layer (25) having a rolling texture formed on at least one side of a base material, whereby the Cu content of the oxide superconductor layer (22a) immediately above the base material is made to have a higher concentration of Cu than the other oxide superconductor layers (22b,22c).