Abstract
Effects of a sintering plate (Ag and Al2O3) on the formation of superconductive phases in the superconductive Bi-Sr-Ca-Cu-O ceramics have been investigated. It is found that the specimen sintered on the Ag plate (860°C×60h) is doped with silver evaporated from the Ag plate, and the amounts of the silver and the high-Tc phase (110 K) in the specimen decrease with distance from the Ag plate. Increase of silver content in the specimen is quite efficient to enhance the formation of the high-Tc phase.
