Sintering of superconducting ceramics of YBa2Cu3Ox prepared by pyrolysis of carboxylates

A systematic study is performed of the sintering process of high-tc ceramic prepared by pyrolysis of liquid metal carboxylates. Optimum conditions of sintering are: temperature 925 deg C; duration 4 hrs; air; slow cooling in the furnace. The method allows high values of superconducting transition temperature be achieved and provides a drastic transition to superconducting state due to better homogeneity and improved stoichiometry of the specimens; It is ascertained that the surface texture of the specimen and morphology of its granules affect mostly the magnitude of critical current density