critical current; magnetic measurements; multifilamentary tapes
Abstract :
[en] This communication aims at reporting the superconducting properties of Bi-2223/Ag tapes determined by using various measuring techniques. First. the original samples have been characterized by electrical resistance, AC susceptibility. and DC magnetization. The transport (intergranular) critical Current vs. magnetic field was also determined at T = 77 K using pulsed currents up to 40 A. Next. the same combination of experiments as performed oil bent tapes in order to bring out relevant information concerning the strength of the intergranular coupling. The results show that intergranular and intragranular currents differ by at least one order of magnitude, Finally, additional magnetic measurements were carried out in order to determine the anisotropy ratio Jc(ab)/Jc(c), which was found to lie around 30. (C) 2002 Elsevier Science B.V. All rights reserved.
Research Center/Unit :
SUPRATECS - Services Universitaires pour la Recherche et les Applications Technologiques de Matériaux Électro-Céramiques, Composites, Supraconducteurs - ULiège
Vanderbemden, Philippe ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
Crate, David
Misson, Vincent
Ausloos, Marcel ; Université de Liège - ULiège > Département de physique > Physique statistique appliquée et des matériaux - S.U.P.R.A.S.
Cloots, Rudi ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale - Doyen de la Faculté des Sciences
Language :
English
Title :
Intragranular and intergranular behaviour of multifilamentary Bi-2223/Ag tapes
Publication date :
2002
Journal title :
Physica C. Superconductivity
ISSN :
0921-4534
eISSN :
1873-2143
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
372
Issue :
Part 2
Pages :
970-973
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE] DGTRE - Région wallonne. Direction générale des Technologies, de la Recherche et de l'Énergie [BE]