Patent ID: 6121207
Filing Date: 2000-09-19
Classification: B01J,C04B,H01L,H01M,Y02E,Y02P,Y10S

Abstract:
A process for making a high temperature superconducting material which has the composition Bi.sub.2+e-x L.sub.x Sr.sub.2 Ca.sub.n-1 Cu.sub.n O.sub.2n+4+d comprising the steps of:combining precursor materials in relative proportions to provide a superconducting compound having the formula Bi.sub.2+e-x L.sub.x Sr.sub.2 Ca.sub.n-1 Cu.sub.n O.sub.2n+4+d, wherein n=1, 2, or 3; 0.ltoreq.e.ltoreq.0.4; 0.ltoreq.x.ltoreq.0.4; and L is selected from the group consisting of Pb, Sb, Tl, and combinations thereof;reacting said precursor materials to form the superconducting compound; andprocessing said superconducting compound to adjust the oxygen stoichiometry of the compound and under conditions which substantially retain the adjustment in oxygen stoichiometry in the superconducting compound; andcontrolling the processing conditions so as to improve a superconducting property of said compound.