High Temperature Superconductivity in Mixed Metal Oxides Containing Yttrium

Abstract
Mixed metal oxides Y-Ba-Cu-O have been prepared with Y:Ba:Cu in 1:2:3 and 2:2:3 ratios and their superconductivity has been investigated. The effect of replacing Ba by Sr on T c has been systematically explored. Results indicate the possibility of superconducting transition above 230 K.