Compound oxide superconducting material and method for preparing the same.

摘要

A now superconducting material comprising a compound oxide represented by the general formula: (Ba, gamma )x( alpha , beta )1-x epsilon yCu1-yO3-z in which " gamma " represents an element of IIa group of the periodic table except Ba, an atomic ratio of gamma to Ba being selected in a range between 1 % and 90 %, " alpha " represents Y or La, " beta " represents an element of IIIa group of the periodic but is different from alpha , an atomic ratio of beta to alpha is selected in a range between 1 % and 90 %, " epsilon " represents a metal element of IIIb group of the periodic table, x, y and z are numbers each satisfies ranges of 0