The effect of temperature on J(c) and n-value of Bi(2223) tapes

Authors
Wang, ZD Chen, ZJ Zhou, YQ Duan, ZZ Wang, WQ
Citation
Zd. Wang et al., The effect of temperature on J(c) and n-value of Bi(2223) tapes, CRYOGENICS, 40(11), 2000, pp. 681-683
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Mechanical Engineering
Journal title
CRYOGENICS
ISSN journal
00112275 → ACNP
Volume
40
Issue
11
Year of publication
2000
Pages
681 - 683
Database
ISI
SICI code
0011-2275(200011)40:11<681:TEOTOJ>2.0.ZU;2-F
Abstract
The critical current density and n-values on four types of Bi2Sr2Ca2CuOx ta pes have been studied from 40 K to the critical temperature. The results sh owed that the critical current density appears in three periods with decrea sing temperature. Compared to Ag alloy-sheathed tapes, the critical current density of AE-sheathed tape is more affected by temperature. It also appea red that n-values have a maximized value near the temperature of liquid nit rogen. When the temperature is lower than 60 K. although the critical curre nt density still shows apparent improvement, n-values are very low. (C) 200 1 Elsevier Science Ltd. All rights reserved.