Patent ID: 8476199
Filing Date: 2013-07-02
Classification: C22C,C23C,H01L,Y10T

Abstract:
1. A rare earth-type tape-shaped oxide superconductor, comprising: a composite substrate comprising a metal substrate which is formed of non-oriented and non-magnetic metal, a first metal layer, and a second metal layer, said first and second metal layers being respectively bonded to opposing surfaces of said metal substrate through a first bonding layer and a second bonding layer, respectively; at least one intermediate layer of a biaxially-oriented inorganic material formed on a surface of said first metal layer of said composite substrate; and a rare earth oxide superconductive layer formed on said intermediate layer; wherein the first and second bonding layers are formed by surface activated bonding at normal temperature, followed by a heat-treatment or hot rolling, wherein said first metal layer comprises plural layers mutually bonded by surface activated bonding, followed by a heat-treatment or hot rolling, wherein said first metal layer has first and second opposing surfaces, wherein said first surface of said first metal layer faces said intermediate layer, wherein said second surface of said first metal layer is bonded to said metal substrate through said second bonding layer, wherein at least said first surface of said first metal layer has a biaxially-oriented cubic texture, and wherein said metal substrate has a larger mechanical strength than that of said first and second metal layers.