Abstract

Detailed informations on the crystal preparations of (La1−xSrx)2CuO4−δand YBa2Cu3O7−δ are reported. The Sr content x in (La1−xSrx)2CuO4−δ crystals is shown as a function of the Sr content in the initial mixtures. For YBa2Cu3O7−δ, the conditions to get three types of crystals, thin plate, rectangular cube and irregular block shapes are described. Annealing effect on the resistivities of these crystals is also reported.

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