Abstract

The phase diagram of a binary system between NdBa2Cu3O7 and 3BaCuO2·2CuO has been studied. A liquidus line which is favourable for obtaining NdBa2 Cu3O7 single crystals from solution is found to exist in a rather wide range compared with that of YBa2Cu3O7. Single crystals of NdBa2Cu3O7-y have been grown by both the slow-cooling method and the top-seeded solution growth (TSSG) method, in accordance with the obtained phase diagrams of the NdBa2Cu3O7-3BaCuO2·2CuO system and our earlier Y2O3-CuO-BaO system.

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