| 一些高Tc超导体的弹性性质 |
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| 引用本文： | 王积方 Mang.,MH.一些高Tc超导体的弹性性质[J].高压物理学报,1991,5(2):130-136. |
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| 作者姓名： | 王积方 Mang. MH |
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| 作者单位： | 中国科学院物理研究所，Hawaii Institute of Geophysics，University of Hawaii，中国科学院物理研究所，中国科学院物理研究所 |
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| 摘 要： | 本文用超声相比较方法测定了高Tc超导体La1.85Sr0.15CuO4，La2CuO4和YBa2Cu3O7的纵波和横波声速，进而导出了它们的纵向模量、切变模量、杨氏模量、泊松比、德拜温度及定体比热。在La1.85Sr0.15CuO4样品上，还进行了压力实验，发现所有弹性模量都是随压强增加而增加。定体比热cV和泊松比σ在高压下则略有下降。德拜温度是随压强增加而增加的。
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| 关 键 词： | 超导体 弹性性质 德拜温度 压力 |
| 收稿时间： | 1990-09-20; |
THE ELASTIC PROPERTIES OF SOME HIGH T_c SUPERCONDUCTORS |
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| Wang Jifang,Manghnani.M.H.,Gu Huichehg,Li Fengying.THE ELASTIC PROPERTIES OF SOME HIGH T_c SUPERCONDUCTORS[J].Chinese Journal of High Pressure Physics,1991,5(2):130-136. |
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| Authors: | Wang Jifang ManghnaniMH Gu Huichehg Li Fengying |
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| Institution: | 1. Institute of Physics, Academia Sinica, Beijing 100080, China;2. Hawaii Institute of Geophysics, University of Hawaii, Hawaii 96720, USA |
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| Abstract: | By using ultrasonic phase comparison method, the longitudinal and shear wave velocities of high Tc superconductors of La2CuO4 La1.85Sr0.15CuO4 and YBa2Cu3O7 have determined. The high pressure results on La1.85Sr0.15CuO4 are also obtained. Based on experimental results, some important elastic characters are derived and superconducting properties are also discussed. |
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| Keywords: | superconductor elastic property Debye temperature pressure |
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