AC susceptibility; high-Tc superconductors; critical current
Abstract :
[en] We measured the AC susceptibility of magnetically textured (123) 80%/211(20%) DyBaCuO composite in a special set-up in order to enhance the intergrain contribution. The synthesis process led to very clean ''weak links'' at grain boundaries. At the percolation threshold bulk shielding paths were such that the intergrain critical current density J(c) was above 10(5) A/cm(2). The field dependence of J(c) was understood through an analytical form indicating a distribution of currents similar to the law of clusters at fracture/percolation thresholds.
Research Center/Unit :
SUPRATECS - Services Universitaires pour la Recherche et les Applications Technologiques de Matériaux Électro-Céramiques, Composites, Supraconducteurs - ULiège
Disciplines :
Physics
Author, co-author :
Cloots, Rudi ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale - Doyen de la Faculté des Sciences
Dang, An
Vanderbemden, Philippe ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
Vanderschueren, André
Bougrine, Hassan ; Université de Liège - ULiège > CARE "Le Réseau des bibliothèques" > Bibliothèque des Sciences et Techniques
Vanderschueren, Hyacinthe ; Université de Liège - ULiège > Services généraux (Faculté des sciences appliquées) > Relations académiques et scientifiques (Sciences appliquées)
Rulmont, André ; Université de Liège - ULiège > Département de chimie (sciences) > Département de chimie (sciences)
Ausloos, Marcel ; Université de Liège - ULiège > Département de physique > Physique statistique appliquée et des matériaux - S.U.P.R.A.S.
Language :
English
Title :
Field percolation and high current density in 80/20 DyBa2Cu3O7-x/Dy2BaCuO5 bulk magnetically textured composite ceramics
Publication date :
1996
Journal title :
Zeitschrift für Physik. B, Condensed Matter
ISSN :
0722-3277
eISSN :
1431-584X
Publisher :
Springer Verlag, New York, United States - New York
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Bibliography
Murakami, M., Morita, M., Koyama, N.: Jpn. J. Appl. Phys. 28, L1125 (1989)
Murakami, M.: In: 'Flux pinning of high temperature superconductors and their applications. Proc. NATO ASI Erice 1993, p. 433, Kaldis, E. (ed) Dordrecht: Kluwer 1994
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