DocumentCode :
1429956
Title :
Investigations on 
Values of Long Bi2223/Ag Tapes
Author :
Zhang, Zhengchen ; Du, Xiaoji ; Zhou, Yigang ; Yang, Xiaole ; Xu, Zhenling ; Zhu, Zhiqin ; Zhang, Jingye ; Li, Xiaohang ; Zhang, Guomin ; Xiao, Liye
Author_Institution :
Inst. of Electr. Eng., Chinese Acad. of Sci., Beijing, China
Volume :
20
Issue :
3
fYear :
2010
fDate :
6/1/2010 12:00:00 AM
Firstpage :
1585
Lastpage :
1588
Abstract :
High temperature superconducting tapes with big values are preferred in high temperature superconducting apparatuses to secure a speeded superconducting-normal transition, a shorten quench detection and protection response time because small values are associated with unstable resistive behaviors. This paper reports our measurement results of values distributions along long Bi2223/Ag tapes at 77 K. The results show that the variation of values is more distinct than that of critical currents along a long Bi2223/Ag tape. And the variation of local values has more effect on the overall value and the overall critical current of a long Bi2223/Ag tape than that of local critical currents. As a result, the overall value is an easy-to-get and reliable parameter to evaluate the critical current homogeneity along a long Bi2223/Ag tape.
Keywords :
bismuth compounds; calcium compounds; critical currents; high-temperature superconductors; lead compounds; silver; statistical distributions; strontium compounds; superconducting tapes; superconducting transitions; Bi2223-Ag tapes; Bi2-xPbxSr2Ca2Cu3O10-Ag; critical current homogeneity; high temperature superconducting tapes; local critical currents; local n value variation; n value distributions; protection response time; quench detection; superconducting apparatus; superconducting-normal transition; temperature 77 K; unstable resistive behaviors; $N$ value; Bi2223/Ag tapes; critical current; statistical distributions;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2010.2040917
Filename :
5422826
Link To Document :
