Preparation of nearly single phase 2223 in Bi1.6Pb0.4Sr2Ca2Cu3Oy composition by a semi-wet route using Pb0.2SrCa(CO3)2.2 precursor

Abstract

A new method for the synthesis of nearly single phase 2223 in Bi1.6Pb0.4Sr2Ca2Cu3Oy composition within 72 h of total heat treatment, using coprecipitates of (1) 0.2 Pb, Ca, Sr as carbonates and (2) 1.6 Bi, 3 Cu as oxalate, is reported. Samples prepared have been characterized by their crystal structure using XRD, microstructure using SEM and electrical resistivity. © 1991.