Paper published in a book (Scientific congresses and symposiums)
Critical state modelling of crossed field demagnetisation in HTS materials
Swartz, J. P.; Mc Culloch, M. D.; Pecher, R.et al.
2004 • In Andreone, A.; Pepe, G. P.; Cristiano, R.et al. (Eds.) Applied Superconductivity 2003 (Proceedings of the 6th European Conference on Applied Superconductivity)
[en] Large magnetic fields can be trapped in high temperature superconductor material,
enabling their use as permanent magnets in various applications. It has, however, been
observed that these materials experience a decay in magnetisation when a field is applied
in a direction transverse to the trapped field. This paper presents the results of critical state
modelling of an infinite slab of superconductor that is first fully magnetised and then exposed
to magnetic field in the transverse direction. The bean and double critical state model are
implemented and the results compared to each other and to that of physical experiment. The
convergence of the decay is investigated as well as the effect of the magnitude of the crossed
field on the final decay value. Diamagnetic and paramagnetic initial conditions are applied to
the material and the results used to compare the accuracy of the bean and double critical state
model.
Research Center/Unit :
SUPRATECS - Services Universitaires pour la Recherche et les Applications Technologiques de Matériaux Électro-Céramiques, Composites, Supraconducteurs - ULiège
Disciplines :
Electrical & electronics engineering
Author, co-author :
Swartz, J. P.; University of Oxford > Department of Engineering Science
Mc Culloch, M. D.; University of Oxford > Department of Engineering Science
Pecher, R.; University of Oxford > Department of Engineering Science
Prigozhin, L.; Ben Gurion University of the Negev > Department of Mathematics
Vanderbemden, Philippe ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
Chapman, S. J.; University of Oxford > Mathematical Institute
Language :
English
Title :
Critical state modelling of crossed field demagnetisation in HTS materials
Publication date :
2004
Event name :
The 6th European Conference on Applied Superconductivity (EUCAS 2003)
Event place :
Sorrento, Italy
Event date :
14-18 September 2003
Audience :
International
Main work title :
Applied Superconductivity 2003 (Proceedings of the 6th European Conference on Applied Superconductivity)
Editor :
Andreone, A.
Pepe, G. P.
Cristiano, R.
Masullo, G.
Publisher :
IOP, Bristol, United Kingdom
ISBN/EAN :
978-0-7503-0981-3
Collection name :
Institute of Physics Conference Series Number 181
Pages :
859-866
Peer reviewed :
Peer reviewed
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique UE - Union Européenne
