critical current; magnetic properties; melt-textured YBCO
Abstract :
[en] This communication aims at reporting the superconducting properties of several bulk melt-processed DyBa2Cu3O7-x samples determined by using various measuring techniques. The original single domain material was first cut into 9 similar cubic samples which have been characterized by AC susceptibility, flux profiles and DC magnetization. The results indicate good quality melt-processed (RE)BCO materials with Tc = 89 K. Next, the effect of post oxygen annealing treatments on these samples was studied. The influence of the non-uniformity of the oxygen content on the magnetic property anisotropy is discussed. Finally, additional magnetic measurements were carried out by using a couple of parallel pick-up coils wound on the same sample. From the results we conclude that geometric effects have to be taken into account in order to extract the critical current density from the magnetic properties.
Research Center/Unit :
SUPRATECS - Services Universitaires pour la Recherche et les Applications Technologiques de Matériaux Électro-Céramiques, Composites, Supraconducteurs - ULiège
Disciplines :
Physics Electrical & electronics engineering
Author, co-author :
Vanderbemden, Philippe ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
Ausloos, Marcel ; Université de Liège - ULiège > Département de physique > Département de physique
Cloots, Rudi ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale - Doyen de la Faculté des Sciences
Language :
English
Title :
Magnetic properties of melt-textured DyBCO single domains
Publication date :
2001
Event name :
MRS Fall meeting 2000
Event organizer :
Materials Research Society
Event place :
Boston, MA, United States
Event date :
27 November-1 December 2000
Audience :
International
Journal title :
Materials Research Society Symposia Proceedings
ISSN :
0272-9172
eISSN :
1946-4274
Publisher :
Cambridge University Press, Cambridge, United Kingdom
Special issue title :
High-Temperature Superconductors - Crystal Chemistry, Processing and Properties. Symposium
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