Process for the enhancement of the Pinning force of superconducting bismuth-strontium-calcium-copper-oxygen ceramic bodies

摘要

Process for enhancing the pinning force of superconducting Bi-Sr-Ca-Cu-O ceramic shaped bodies, characterised in that the phase-pure 2212 phase of a Bi-Sr-Ca-Cu-O ceramic shaped body is heated for from 1 to 40 minutes under pure oxygen or under an oxygen-containing gas to a temperature of from 825 to 900@C and secondary-phase precipitates are thus produced.