Oxide superconducting material and process for preparing the same.

摘要

Superconducting oxide material containing compound represented by the formula: (Tl(1-p-q) Bip Pbq)y gamma z ( alpha (1-r) beta r)s Cuv Ow in which each of " alpha " and " gamma " is an element selected in IIa group of the periodic table, " beta " is an element selected from a group comprising Na, K, Rb and Cs, "y", "z", "v", "w", "p", "q", "r" and "s" are numbers each satisfying respective range of 0.5