Effect of annealing treatments on normal state resistivity of YBa₂(Cu_1-xTi_x)₃O_y superconductor in bipolaron model

Abstract

Samples of YBa₂(Cu_1-xTi_x)₃O_y superconductor with x=0.00 , 0.01, 0.03 have been prepared by solide state reaction method. The effect of annealing treatments on normal electrical resistivity has been done using the bipolaron model. The results of this study show the increase of localized charge when the dopant content increases and the reduction of this localization with annealing treatment.

Keywords: YBa₂(Cu_1-xTi_x)₃O_y superconductor, normal state, bipolaron