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The effect of temperature on Jc and n-value of Bi(2 2 2 3) tapes

✍ Scribed by Zhengdao Wang; Zhaojia Chen; Yuqing Zhou; Zhengzhong Duan; Wenquan Wang


Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
263 KB
Volume
40
Category
Article
ISSN
0011-2275

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✦ Synopsis


The critical current density and n-values on four types of Bi 2 Sr 2 Ca 2 CuO x tapes have been studied from 40 K to the critical temperature. The results showed that the critical current density appears in three periods with decreasing temperature. Compared to Ag alloy-sheathed tapes, the critical current density of Ag-sheathed tape is more aected by temperature. It also appeared that nvalues have a maximized value near the temperature of liquid nitrogen. When the temperature is lower than 60 K, although the critical current density still shows apparent improvement, n-values are very low.


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