Article (Scientific journals)
Study by Hall probe mapping of the trapped flux modification produced by local heating in YBCOHTS bulks for different surface/volume ratios
Laurent, Philippe; Mathieu, Jean-Philippe; Mattivi, Brice et al.
2005In Superconductor Science and Technology, 18 (8), p. 1047-1053
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Keywords :
superconductivity; magnetic measurements; thermal measurements
Abstract :
[en] The aim of this report is to compare the trapped field distribution under a local heating created at the sample edge for different sample morphologies. Hall probe mappings of the magnetic induction trapped in YBCO bulk samples maintained out of thermal equilibrium were performed on YBCO bulk single domains, YBCO single domains with regularly spaced hole arrays, and YBCO superconducting foams. The capability of heat draining was quantified by two criteria: the average induction (B) decay and the size of the thermally affected zone caused by a local heating of the sample. Among the three investigated sample shapes, the drilled single domain displays a trapped induction which is weakly affected by the local heating while displaying a high trapped field. Finally, a simple numerical modelling of the heat flux spreading into a drilled sample is used to suggest some design rules about the hole configuration and their size.
Research center :
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 :
Laurent, Philippe ;  Université de Liège - ULiège > Capteurs et systèmes de mesures électriques
Mathieu, Jean-Philippe;  Université de Liège - ULiège > Chimie inorganique structurale
Mattivi, Brice;  Université de Liège - ULiège > Electrical Engineering & Computer Science
Fagnard, Jean-François  ;  Université de Liège - ULiège > Dép. d'électric.
Meslin, S.;  CRISMAT-ENSICAEN, CNRS/UMR 6508
Noudem, J. G.;  CRISMAT-ENSICAEN, CNRS/UMR 6508
Ausloos, Marcel ;  Université de Liège - ULiège > Département de physique > Physique statistique appliquée et des matériaux
Cloots, Rudi ;  Université de Liège - ULiège > Chimie inorganique structurale
Vanderbemden, Philippe  ;  Université de Liège - ULiège > Capteurs et systèmes de mesures électriques
Language :
English
Title :
Study by Hall probe mapping of the trapped flux modification produced by local heating in YBCOHTS bulks for different surface/volume ratios
Publication date :
2005
Journal title :
Superconductor Science and Technology
ISSN :
0953-2048
eISSN :
1361-6668
Publisher :
Iop Publishing Ltd, Bristol, United Kingdom
Volume :
18
Issue :
8
Pages :
1047-1053
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
UE - Union Européenne [BE]
DGTRE - Région wallonne. Direction générale des Technologies, de la Recherche et de l'Énergie [BE]
Ministère Français de la Recherche et de la Technologie
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