Influence of synthesis and postgrowth treatment conditions on the structural homogeneity of YBa2Cu3Ox single crystals

The effect of synthesis and postgrowth treatment (by annealing at various temperatures and partial oxygen pressures) conditions on structural homogeneity of YBa₂Cu₃O_x single crystals has been studied. The obtaining of single crystals with both high oxygen content and high critical temperatures T_c has been optimized. The wide range of postgrowth treatment conditions proposed allows to receive single crystals with given oxygen content from 6.2 to 7.0.