Enhanced Tc in Sn-added Bi-2-1-2-2 superconductor

Abstract

Addition of Sn to superconducting (BiPb)2Sr2Ca1Cu2Oy, has been studied extensively using EDAX, SEM and electron diffraction. It is found that addition of Sn increases Tc to an extent of 7 K unlike Sn substitution. The present study indicates that Sn occupies the Cu site. © 1992.