| 单相钇钡铜氧高温超导体的超导转变与内耗原位研究 |
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| 引用本文： | 杜家驹,姜建义,王翔,尹华清.单相钇钡铜氧高温超导体的超导转变与内耗原位研究[J].物理学报,1988,37(9):1556-1559. |
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| 作者姓名： | 杜家驹 姜建义 王翔 尹华清 |
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| 作者单位： | 中国科学院固体物理研究所 |
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| 基金项目： | 1987年11月23日 |
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| 摘 要： | 在80至300K温度范围内对YBa2Cu3O7-δ高温超导体的电阻、内耗和弹性模量随温度的变化进行了原位测量。在Tc附近观察到两个明显的内耗峰。从峰的特征推断,这两个内耗峰可能与电子在Cu3+与Cu2+之间的弛豫过程有关。而在160K到280K温度范围内所观察到的内耗峰及杨氏模量反常效应,可能与试样中氧空位的调整有关。
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| 收稿时间： | 1987-11-23 |
IN-SITU STUDY OF THE SUPERCONDUCTING TRANSITION AND INTERNAL FRICTION OF HIGH Tc SUPERCONDUCTOR YBaCuO |
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| DU JIA-JU,JIANG JIAN-YI,WANG XIANG and YIN HUA-QING.IN-SITU STUDY OF THE SUPERCONDUCTING TRANSITION AND INTERNAL FRICTION OF HIGH Tc SUPERCONDUCTOR YBaCuO[J].Acta Physica Sinica,1988,37(9):1556-1559. |
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| Authors: | DU JIA-JU JIANG JIAN-YI WANG XIANG and YIN HUA-QING |
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| Abstract: | The resistance, internal friction and Young's modulus of a high Tc superconductor-YBa2Cu3O7-δ were measured in-situ at 80 K to 300 K. Two obvious peaks of internal friction were observed near Tc On account of character of the peaks, we suggest that these two peaks are associated with the eletronic relaxation between Cu3+ and Ca2+ The peak and anomalies of Young's modulus observed in the range of 160 K to 280 K may be related to the position adjustment of oxygen vacancies. |
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