Method for preparing superconductors ceramic composition

A process of forming a superconductor ceramic of the formula:

• YBa.sub.2 Cu.sub.3 O.sub.x wherein x is from about 6.5 to about 7.2, said process comprising:
• (a) heating a solid phase copper salt selected from the group of copper acetate and copper nitrate and solid phase barium hydroxide to a temperature high enough to form a melt-phase;
• and
• (b) adding to the melt a salt, hydroxide or oxide as a source of yttrium with stirring to provide a substantially homogeneous mixture, the quantities of each of said copper salt, barium hydroxide and yttrium source being sufficient to yield a Y:Ba:Cu ratio of about 1:2:3;
• and thereafter
• (c) calcining the substantially homogeneous mixture at temperatures of from about 750.degree. C. to about 1000.degree. C. to form said superconductor ceramic.