Magnetization reversal modes and coercive field dependence on perpendicular magnetic anisotropy in FePt thin films

The competition between shape and perpendicular magnetic anisotropies in magnetic thin films gives rise to unusual magnetic behaviors. In ferromagnetic thin films, the presence of an out-of-plane component of the magnetic anisotropy may induce a transition from planar to stripe-like magnetic domains...

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Autores: Román, A., López Pedroso, A., Bouzehouane, K., Gómez, J. E., Butera, A., Aguirre, M. H., Soares, M. Medeiros, Garcia, C., Steren, L. B.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2023
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:130172
Acceso en línea:http://zaguan.unizar.es/record/130172
Access Level:acceso abierto
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spelling Magnetization reversal modes and coercive field dependence on perpendicular magnetic anisotropy in FePt thin filmsRomán, A.López Pedroso, A.Bouzehouane, K.Gómez, J. E.Butera, A.Aguirre, M. H.Soares, M. MedeirosGarcia, C.Steren, L. B.The competition between shape and perpendicular magnetic anisotropies in magnetic thin films gives rise to unusual magnetic behaviors. In ferromagnetic thin films, the presence of an out-of-plane component of the magnetic anisotropy may induce a transition from planar to stripe-like magnetic domains above a critical thickness, $t_{\mathrm c}$. In this article, we present a detailed study of the magnetization switching mechanism in FePt thin films, where this phenomenon is observed. Using micromagnetic simulations and experiments, we found that below $t_{\mathrm c}$ the reversal mechanism is well described by the two-phase model while above this thickness the magnetization within each stripe reverses by coherent rotation. We also analyzed the out-of-plane component of the magnetic anisotropy and its temperature dependence, probing that substrate-induced strains are responsible for the abnormal coercive field behavior observed for FePt films with $t\gt t_{\mathrm c}$.2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://zaguan.unizar.es/record/130172reponame:Zaguán. Repositorio Digital de la Universidad de Zaragozainstname:Universidad de ZaragozaInglésinfo:eu-repo/grantAgreement/EC/H2020/734187This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 734187-SPICOLOSTinfo:eu-repo/semantics/openAccessoai:zaguan.unizar.es:1301722026-05-29T13:59:51Z
dc.title.none.fl_str_mv Magnetization reversal modes and coercive field dependence on perpendicular magnetic anisotropy in FePt thin films
title Magnetization reversal modes and coercive field dependence on perpendicular magnetic anisotropy in FePt thin films
spellingShingle Magnetization reversal modes and coercive field dependence on perpendicular magnetic anisotropy in FePt thin films
Román, A.
title_short Magnetization reversal modes and coercive field dependence on perpendicular magnetic anisotropy in FePt thin films
title_full Magnetization reversal modes and coercive field dependence on perpendicular magnetic anisotropy in FePt thin films
title_fullStr Magnetization reversal modes and coercive field dependence on perpendicular magnetic anisotropy in FePt thin films
title_full_unstemmed Magnetization reversal modes and coercive field dependence on perpendicular magnetic anisotropy in FePt thin films
title_sort Magnetization reversal modes and coercive field dependence on perpendicular magnetic anisotropy in FePt thin films
dc.creator.none.fl_str_mv Román, A.
López Pedroso, A.
Bouzehouane, K.
Gómez, J. E.
Butera, A.
Aguirre, M. H.
Soares, M. Medeiros
Garcia, C.
Steren, L. B.
author Román, A.
author_facet Román, A.
López Pedroso, A.
Bouzehouane, K.
Gómez, J. E.
Butera, A.
Aguirre, M. H.
Soares, M. Medeiros
Garcia, C.
Steren, L. B.
author_role author
author2 López Pedroso, A.
Bouzehouane, K.
Gómez, J. E.
Butera, A.
Aguirre, M. H.
Soares, M. Medeiros
Garcia, C.
Steren, L. B.
author2_role author
author
author
author
author
author
author
author
description The competition between shape and perpendicular magnetic anisotropies in magnetic thin films gives rise to unusual magnetic behaviors. In ferromagnetic thin films, the presence of an out-of-plane component of the magnetic anisotropy may induce a transition from planar to stripe-like magnetic domains above a critical thickness, $t_{\mathrm c}$. In this article, we present a detailed study of the magnetization switching mechanism in FePt thin films, where this phenomenon is observed. Using micromagnetic simulations and experiments, we found that below $t_{\mathrm c}$ the reversal mechanism is well described by the two-phase model while above this thickness the magnetization within each stripe reverses by coherent rotation. We also analyzed the out-of-plane component of the magnetic anisotropy and its temperature dependence, probing that substrate-induced strains are responsible for the abnormal coercive field behavior observed for FePt films with $t\gt t_{\mathrm c}$.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://zaguan.unizar.es/record/130172
url http://zaguan.unizar.es/record/130172
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/EC/H2020/734187
This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 734187-SPICOLOST
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv
publisher.none.fl_str_mv
dc.source.none.fl_str_mv reponame:Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname:Universidad de Zaragoza
instname_str Universidad de Zaragoza
reponame_str Zaguán. Repositorio Digital de la Universidad de Zaragoza
collection Zaguán. Repositorio Digital de la Universidad de Zaragoza
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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