Process for producing superconductive ceramics.

摘要

A process for a synthesizing of superconductive ceramics, which comprises adding a solution containing ions of rare earth elements, alkaline earth elements and copper into an alcohol solution of oxalic acid to precipitate oxalates of the rare earth elements, the alkaline earth elements and copper, dropwise adding ammonia water to the solution in which the oxalates are precipitated to adjust a pH thereof to 2 to 7, and calcining, molding and sintering the mixture of oxalates of the rare earth element, alkaline earth metal and Cu obtained by filtration of the above-mentioned solution.