Oxide superconducting wire having insulating coat

Abstract

An oxide superconducting wire is provided which allows an insulating layer to be formed without deteriorating the superconducting properties. An oxide superconducting wire includes oxide superconducting filaments 1, a matrix 2, a covering layer 3, and an insulating layer 4. The matrix 2 is placed so as to enclose the oxide superconducting filaments 1 and is made of silver. The covering layer 3 is placed so as to enclose the matrix 2, contains silver and manganese, and has a thickness of 10 μm to 50 μm. The insulating layer 4 is placed so as to enclose the covering layer 3.

1 . An oxide superconducting wire comprising: 
 an oxide superconducting filament;    a matrix placed so as to enclose said oxide superconducting filament and which contains silver and antimony;    a covering layer placed so as to enclose said matrix, containing silver and manganese, and having a thickness of 10 μm to 50 μm; and    an insulating layer placed so as to enclose said covering layer.    
     
     
         2 . An oxide superconducting wire according to  claim 1 , wherein said matrix contains 0.1% to 0.5% antimony by weight, and said covering layer contains 0.5% to 1.0% manganese by weight.  
     
     
         3 . An oxide superconducting wire according to  claim 2 , wherein the manganese is dispersed as oxide particles in said covering layer. 4. An oxide superconducting wire according to  claim 2 , wherein the manganese exists while being in a solid solution in said covering layer.