Composite superconducting materials of the Bi-Sr-Ca-Cu-O (2212) system
with fine precipitates of SrZrO3 have been prepared from co-precipita
ted oxalates using melt including procedures in air and in oxygen. SrZ
rO3 phase formation and microstructure of the materials at different s
teps of processing, as well as magnetic properties of the superconduct
ors prepared have been studied.