PROCESS FOR INCREASING THE PINNING FORCE OF SUPERCONDUCTING BI-SR-CA-CU-O CERAMIC MOLDINGS

摘要

: Process for increasing the pinning force of superconducting Bi-Sr-Ca-Cu-O ceramic moldings Process for increasing the pinning force of superconducting Bi-Sr-Ca-Cu-O ceramic moldings, which comprises heating the pure-phase 2212 phase of a Bi-Sr-Ca-Cu-O ceramic molding under pure oxygen or an oxygencontaining gas for from 1 to 40 minutes to a temperature of from 825 to 900.degree.C and generating secondary-phase precipitates in the process.