Xh. Gao et al., FURTHER IMPROVEMENT OF THE SUPERCONDUCTIVITY IN F-DOPED BI-SR-CA-CU-OSUPERCONDUCTORS, Physica. C, Superconductivity, 245(1-2), 1995, pp. 66-68
A new method for the synthesis of bulk superconductors (Bi,Pb)-Sr-Ca-C
u-(O,F) is reported. Using PbF2 as one of the reagents, the sintering
temperature is raised step by step, and a sample of single phase with
zero resistance temperature Gamma(c0) = 121.0 K can be obtained.