
%0 Journal Article
%A White, TJ 
%A Barnea, Z 
%A Goodman, P 
%A Jensen, DG 
%T Preparation and Microstructural Investigation of the High?Tc Superconductor Pb2Sr2Y0.5Ca0.5Cu308
%J Australian Journal of Physics
%D 1989/10/01
%V 42
%N 5
%P 551-564
%K 
%R https://doi.org/10.1071/PH890551
%U https://www.publish.csiro.au/paper/PH890551 
%X Simple conditions for the preparation of the high-Tc superconductor Pb2Sr2Yo-sCao·sCu308+o in single phase are given. High resolution electron microscope studies of this material confirm the basic orthorhombic structure having Cmmm symmetry. Overlaying this structure is a perturbation due to random displacements of Pb from the ideal square-symmetric Sites, attributed to a randomness in oxygen sub-stoichiometry. This and the absence of superstructure ordering appears to characterise the uperconducting form of this compound. 
