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Temperature Effects on Properties of Bi(2223) High Temperature
Superconducting Tapes |
| WANG Zheng-Dao1,2;CHEN Zhao-Jia2;DUAN Zhen-Zhong3;WANG Wen-Quan4
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| 1Cryogenic Laboratory, Chinese Academy of Sciences,
Beijing 100080
2Institute of Physics, Chinese Academy of Sciences, Beijing 100080
3Northwest Institute for Non-Ferrous Metal Research, Xi’an 710016
4Beijing General Research Institute for Non-Ferrous Metals, Beijing 100080
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| Cite this article: |
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WANG Zheng-Dao, CHEN Zhao-Jia, DUAN Zhen-Zhong et al 2001 Chin. Phys. Lett. 18 677-679 |
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Abstract The critical current density Jc and n-value have been studied from 40 K to critical temperature for four types of Bi-system 2223 tapes with different sheaths. The experimental results demonstrate that the change of Jc can be divided into three parts and n-value has some decrease with a decrease in temperature. In engineering application, a proper working temperature can be selected to satisfy the practical requirement. Furthermore, the temperature effects on critical stress for Ag-sheath tape was also studied. The results demonstrate that the critical stress does not change monotonously with a decrease in temperature. It increases first, then decreases with the further decrease in temperature.
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| Keywords:
74.60.Jg
74.25.-q
74.70.Ad
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Published: 01 May 2001
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