Superconducting metal oxide Tl-Pb-Ca-Sr-O compositions and processes for manufacture and use

摘要

Compositions having the nominal formula TlePbaCabSrcCudOx wherein a is from about 1/10 to 3/2, b is from about 1 to 4, c is from about 1 to 3 d is from about 1 to 5 e is from about 3/10 to 1 x=(a+b+c+d+e+y) where y is from about 1/2 to 3, are superconducting. Processes for manufacturing such compositions and for using them are disclosed.