Available on ORBi since
12 February 2021
Article (Scientific journals)
Trapped magnetic field distribution above two magnetized bulk superconductors close to each other
Houbart, Michel  ; Fagnard, Jean-François  ; Dennis, Anthony et al.
2020 • In Superconductor Science and Technology, 33
Peer Reviewed verified by ORBi
 

Files


Full Text
Houbart2020.pdf
Author postprint (3.13 MB)
Full Text Parts
Houbart2020_edit.pdf
Publisher postprint (1.41 MB)

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Bulk superconductor; trapped field magnet; magnetic field gradient; interacting bulk superconductors; flux pinning
Abstract :
[en] Bulk large-grain superconductors can be used as high-field permanent magnets. Although the properties of such individual trapped field magnets are well documented, much less is known concerning their behaviour when two are brought together. In this work, the interaction between two cylindrical bulk YBa2Cu3O7 (YBCO) superconductors is described. Two sets of experiments were carried out. The first involved the simultaneous magnetization of two bulk superconductors placed a short distance apart. Here, the applied magnetic field was aligned parallel to the c-axis of one bulk, while the other was oriented with its c-axis offset . For a centre-to-centre distance equal to twice the sample height, the presence of the second sample is found not to alter the current distribution inside the first. Consequently, the contribution of both samples simply sums, thus increasing the magnetic flux density between them. In the second set of experiments, the translational approach of the superconductors with parallel c-axes was investigated. The following configurations were considered: (i) face to face approach (with anti-parallel trapped field orientation) and (ii) sideways approach (with parallel trapped field orientation). An irreversible decrease of the trapped field was measured on separation . Repeated approach cycles showed that the irreversible loss of trapped field is largest for the first approach.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Houbart, Michel ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
Fagnard, Jean-François  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
Dennis, Anthony;  University of Cambridge > Department of Engineering
Namburi, Devendra Kumar;  University of Cambridge > Department of Engineering
Shi, Yunhua;  University of Cambridge > Department of Engineering
Durrell, John;  University of Cambridge > Department of Engineering
Vanderbemden, Philippe  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
Language :
English
Title :
Trapped magnetic field distribution above two magnetized bulk superconductors close to each other
Alternative titles :
[fr] Distribution du champ piégé au dessus de deux supraconducteurs massifs proche l'un de l'autre
Publication date :
01 May 2020
Journal title :
Superconductor Science and Technology
ISSN :
0953-2048
eISSN :
1361-6668
Publisher :
Institute of Physics Publishing, Bristol, United Kingdom
Special issue title :
Focus on Processing and Application of Superconducting Bulk Materials 2019
Volume :
33
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique
Henry Royce Institute

Statistics


Number of views
56 (21 by ULiège)
Number of downloads
27 (10 by ULiège)

Scopus citations®
 
1
Scopus citations®
without self-citations
0

Bibliography


Similar publications



Contact ORBi