Properties of Pb-doped Bi-Sr-Ca-Cu-O superconductors

Abstract
A zero resistance transition temperature of 108 K has been achieved for Pb‐doped Bi‐Sr‐Ca‐Cu‐O superconductors prepared by conventional powder solid‐state reaction. The materials contained both the high Tc phase (Bi2Sr2Ca2Cu3Ox) and the low Tc phase (Bi2Sr2Ca1Cu2Ox). Critical current density at 100 K in a zero magnetic field was 3.5 A/cm2 which was larger than that of the Pb‐free sample.