Computer-simulation study of magnetic relaxation in anisotropic magnetic systems

We present a computer-simulation study of the effect of the distribution of energy barriers in an anisotropic magnetic system on the relaxation behavior of the magnetization. While the relaxation law for the magnetization can be approximated in all cases by a time logarithmic decay, the law for the...

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Detalles Bibliográficos
Autores: González-Miranda, J. M. (Jesús Manuel), Tejada Palacios, Javier
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1994
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/9744
Acceso en línea:https://hdl.handle.net/2445/9744
Access Level:acceso abierto
Palabra clave:Relaxació (Física nuclear)
Magnetisme
Relaxation (Nuclear physics)
Magnetism
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spelling Computer-simulation study of magnetic relaxation in anisotropic magnetic systemsGonzález-Miranda, J. M. (Jesús Manuel)Tejada Palacios, JavierRelaxació (Física nuclear)MagnetismeRelaxation (Nuclear physics)MagnetismWe present a computer-simulation study of the effect of the distribution of energy barriers in an anisotropic magnetic system on the relaxation behavior of the magnetization. While the relaxation law for the magnetization can be approximated in all cases by a time logarithmic decay, the law for the dependence of the magnetic viscosity with temperature is found to be quite sensitive to the shape of the distribution of barriers. The low-temperature region for the magnetic viscosity never extrapolates to a positive no-null value. Moreover our computer simulation results agree reasonably well with some recent relaxation experiments on highly anisotropic single-domain particles.The American Physical Society1994info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/9744Articles publicats en revistes (Física de la Matèria Condensada)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.49.3867Physical Review B, 1994, vol. 49, núm. 6, p. 3867-3873.http://dx.doi.org/10.1103/PhysRevB.49.3867(c) The American Physical Society, 1994info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/97442026-05-27T06:46:51Z
dc.title.none.fl_str_mv Computer-simulation study of magnetic relaxation in anisotropic magnetic systems
title Computer-simulation study of magnetic relaxation in anisotropic magnetic systems
spellingShingle Computer-simulation study of magnetic relaxation in anisotropic magnetic systems
González-Miranda, J. M. (Jesús Manuel)
Relaxació (Física nuclear)
Magnetisme
Relaxation (Nuclear physics)
Magnetism
title_short Computer-simulation study of magnetic relaxation in anisotropic magnetic systems
title_full Computer-simulation study of magnetic relaxation in anisotropic magnetic systems
title_fullStr Computer-simulation study of magnetic relaxation in anisotropic magnetic systems
title_full_unstemmed Computer-simulation study of magnetic relaxation in anisotropic magnetic systems
title_sort Computer-simulation study of magnetic relaxation in anisotropic magnetic systems
dc.creator.none.fl_str_mv González-Miranda, J. M. (Jesús Manuel)
Tejada Palacios, Javier
author González-Miranda, J. M. (Jesús Manuel)
author_facet González-Miranda, J. M. (Jesús Manuel)
Tejada Palacios, Javier
author_role author
author2 Tejada Palacios, Javier
author2_role author
dc.subject.none.fl_str_mv Relaxació (Física nuclear)
Magnetisme
Relaxation (Nuclear physics)
Magnetism
topic Relaxació (Física nuclear)
Magnetisme
Relaxation (Nuclear physics)
Magnetism
description We present a computer-simulation study of the effect of the distribution of energy barriers in an anisotropic magnetic system on the relaxation behavior of the magnetization. While the relaxation law for the magnetization can be approximated in all cases by a time logarithmic decay, the law for the dependence of the magnetic viscosity with temperature is found to be quite sensitive to the shape of the distribution of barriers. The low-temperature region for the magnetic viscosity never extrapolates to a positive no-null value. Moreover our computer simulation results agree reasonably well with some recent relaxation experiments on highly anisotropic single-domain particles.
publishDate 1994
dc.date.none.fl_str_mv 1994
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/9744
url https://hdl.handle.net/2445/9744
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.49.3867
Physical Review B, 1994, vol. 49, núm. 6, p. 3867-3873.
http://dx.doi.org/10.1103/PhysRevB.49.3867
dc.rights.none.fl_str_mv (c) The American Physical Society, 1994
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) The American Physical Society, 1994
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv The American Physical Society
publisher.none.fl_str_mv The American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física de la Matèria Condensada)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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