Remarkable influence of heat treatment on the structural and superconducting properties of (Y_1–xSm_x)(SrBa)Cu₃O_6+z

Abstract

We report here on the preparation, effect of heat treatments, X-ray diffraction and AC magnetic susceptibility measurements in the high T c superconductor (Y 1-x Sm x )(SrBa)Cu 3 O 6+z (x = 0, 0.2, 0.4, 0.5, 0.6, 0.8 and 1). Each sample was subject to two types of heat treatment: oxygen annealing [O] and argon annealing followed by oxygen annealing [AO].