The effect of constituent content on superconductivity and phase in BiPbSbSrCaCuO system

In this paper the effect of constituent content on superconductivity and phase in BiPbSbSrCaCuO system is reported. The zero resistance temperature Tce reaches as high as 132K when Sb = 0.1 and Tce is decreased dramatically with increasing either Sb-content or Cu-content in BiPbSbSrCaCuO system while the corresponding phase is changed fundamentally. A orthorhombic cell with a =23.16 A , b =9.48 A , c =6.20 A is proposed for a predominant phase in nominal composition Bi1.6Pb0.4SbxSr2Ca2Cu3Oy (x=0.3–1.0) of non-superconducting system.