| 基于低温光声光谱技术的YBa2Cu3O7-δ超导转变过程 |
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| 引用本文： | 董昌文,王新锋,吴次南.基于低温光声光谱技术的YBa2Cu3O7-δ超导转变过程[J].光谱实验室,2012,29(4):2600-2603. |
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| 作者姓名： | 董昌文 王新锋 吴次南 |
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| 作者单位： | 1. 贵州民族学院理学院 贵阳市花溪区花溪大道南段 550025
2. 贵州大学理学院 贵阳市花溪区花溪大道南段 550025 |
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| 基金项目： | 贵州省人才特助经费TZJF[2006]11号 |
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| 摘 要： | 利用低温光声系统实时采集高Tc超导材料超导转变过程光声信号,是高Tc超导材料超导机理研究的一种新的实验方法。选取YBa2Cu3O7-8超导体作为试样,分别构建常态→超导态（试样降温过程）和超导态→常态（试样升温过程）,得到转变过程光声信号对比图,并依据光声光谱图对试样失超现象作出可能的解释。
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| 关 键 词： | 低温光声系统 YBa2Cu3O7-δ 超导转变 失超 |
Process of Superconductal Transformation for YBa2Cu3O7-δ by Low-Temperature Photoacoustic Spectrometry |
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| DONG Chang-Wen
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WANG Xin-Feng
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WU Ci-Nan.Process of Superconductal Transformation for YBa2Cu3O7-δ by Low-Temperature Photoacoustic Spectrometry[J].Chinese Journal of Spectroscopy Laboratory,2012,29(4):2600-2603. |
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| Authors: | DONG Chang-Wen WANG Xin-Feng WU Ci-Nan |
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| Institution: | Dong Chang-Wen Wang Xin-Feng WU Ci-Nana (Department of Physics,Guizhou Minzu University,Guiyang 550025,P.R.China) a(Department of Physics,Guizhou University,Gutyang 550025,P.R.China) |
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| Abstract: | Low-temperature photoacoustic system was used to collect photoacoustic signals of high Tc superconducting material in process of superconducting transformation,which was a new experimental method of study on superconducting mechanism of high Tc superconducting material.By selecting YBa2Cu3O7-δ superconductor as sample and constructing normal state to superconducting state（cold-down process of sample） as well as superconducting state to normal state（warm-up process of sample）,contrast diagram of photoacoustic signals in process of transformation is obtained,and possible reasons for lose superconductivity phenomenon of sample was explained according to photoacoustic spectral diagram. |
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| Keywords: | Low-Temperature Photoacoustic System YBa2Cu3O7-δ Superconducting Transition Lose superconductivity |
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