Cryochemical synthesis of high-temperature superconducting ceramics

Using cryochemical technology (dispersion of a mixture of aqueous solutions of corresponding salts into liquid nitrogen, sublimation drying of cryogranules and their subsequent thermal decomposition), powder oxidic superconducting materials of Y-Ba-Cu-O system are synthesized. Further pressing of the prepared powders and their sintering at 850-950 deg C were carried out. The conclusion is made that the use of cryochemical synthesis in production of superconducting ceramics is promising due to its simplicity, high efficiency and high chemical activity of the powders prepared. 1 ref.; 2 figs