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摘要: 高温高压下合成出了新块材超导体Pr1-xCaxBa2Cu3O7-(0.4x0.6),高压合成使Ca在Pr-123相中的溶解度有很大提高,从而有效地补偿了Pr对CuO2面空穴的填充而使样品超导。Abstract: The new bulk superconductors Pr1-xCaxBa2Cu3O7- (0.4x0.6) have been synthesized under a high-pressure of 5 GPa and 1 000 ℃ for 30 min. The solubility of Ca in Pr-123 phase has much increased by the high pressure synthesis method, that effectively compensates the hole-filling by Pr on CuO2 planes and achieves superconducting.
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Key words:
- high-Tc superconductor /
- high temperature and high pressure /
- doping
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