Experimental and computational analysis of the angular dependence of the hysteresis processes in an antidots array.

We have experimentally characterized the magnetization processes of a square array of micron sized circular antidots lithographed on a Fe(001)/GaAs film with its diagonals along the Fe magnetocrystalline easy axes (100). Both the anisotropy and the angular dependence of the magnetization reversal we...

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Autores: Pigazo, F., García Sánchez, F., Palomares, F. Javier, González-Calbet, José M., Chubykalo-Fesenko, O., Cebollada, F., Torres, Juan María, Bartolomé, Juan, García, L. M.
Formato: artículo
Fecha de publicación:2006
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/19635
Acesso em linha:http://hdl.handle.net/10261/19635
Access Level:acceso abierto
Palavra-chave:Iron
Gallium arsenide
III-V semiconductors
Ferromagnetic materials
Coercive force
Magnetisation reversal
Magnetic anisotropy
Magnetic hysteresis
Magnetic domain walls
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spelling Experimental and computational analysis of the angular dependence of the hysteresis processes in an antidots array.Pigazo, F.García Sánchez, F.Palomares, F. JavierGonzález-Calbet, José M.Chubykalo-Fesenko, O.Cebollada, F.Torres, Juan MaríaBartolomé, JuanGarcía, L. M.IronGallium arsenideIII-V semiconductorsFerromagnetic materialsCoercive forceMagnetisation reversalMagnetic anisotropyMagnetic hysteresisMagnetic domain wallsWe have experimentally characterized the magnetization processes of a square array of micron sized circular antidots lithographed on a Fe(001)/GaAs film with its diagonals along the Fe magnetocrystalline easy axes (100). Both the anisotropy and the angular dependence of the magnetization reversal were measured by means of magnetooptic techniques. The coercivity of the loops along the easy and in-plane hard axes of the array increases approximately 2.5 times with respect to that measured in the continuous film region, and the first order anisotropy constant remains equal to that of bulk Fe. The magnetization reversal takes place in two steps for all the loops measured out of the easy and hard axes. We have simulated the magnetization reversal using two different micromagnetic models. In the first one, assuming that the reversal takes place fully inside the array, we have observed that the reversal nucleates at the magnetic inhomogeneities occurring at the antidot boundaries and resulting from magnetostatic energy minimization. In our second model we artificially introduced a domain wall outside the antidot region that governs the magnetization reversal showing a qualitative agreement with the angular dependence of coercivity.Peer reviewedAmerican Institute of Physics200920092006info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_650110752 bytesapplication/octet-streamhttp://hdl.handle.net/10261/19635reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1063/1.2170050info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/196352026-05-22T06:33:51Z
dc.title.none.fl_str_mv Experimental and computational analysis of the angular dependence of the hysteresis processes in an antidots array.
title Experimental and computational analysis of the angular dependence of the hysteresis processes in an antidots array.
spellingShingle Experimental and computational analysis of the angular dependence of the hysteresis processes in an antidots array.
Pigazo, F.
Iron
Gallium arsenide
III-V semiconductors
Ferromagnetic materials
Coercive force
Magnetisation reversal
Magnetic anisotropy
Magnetic hysteresis
Magnetic domain walls
title_short Experimental and computational analysis of the angular dependence of the hysteresis processes in an antidots array.
title_full Experimental and computational analysis of the angular dependence of the hysteresis processes in an antidots array.
title_fullStr Experimental and computational analysis of the angular dependence of the hysteresis processes in an antidots array.
title_full_unstemmed Experimental and computational analysis of the angular dependence of the hysteresis processes in an antidots array.
title_sort Experimental and computational analysis of the angular dependence of the hysteresis processes in an antidots array.
dc.creator.none.fl_str_mv Pigazo, F.
García Sánchez, F.
Palomares, F. Javier
González-Calbet, José M.
Chubykalo-Fesenko, O.
Cebollada, F.
Torres, Juan María
Bartolomé, Juan
García, L. M.
author Pigazo, F.
author_facet Pigazo, F.
García Sánchez, F.
Palomares, F. Javier
González-Calbet, José M.
Chubykalo-Fesenko, O.
Cebollada, F.
Torres, Juan María
Bartolomé, Juan
García, L. M.
author_role author
author2 García Sánchez, F.
Palomares, F. Javier
González-Calbet, José M.
Chubykalo-Fesenko, O.
Cebollada, F.
Torres, Juan María
Bartolomé, Juan
García, L. M.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Iron
Gallium arsenide
III-V semiconductors
Ferromagnetic materials
Coercive force
Magnetisation reversal
Magnetic anisotropy
Magnetic hysteresis
Magnetic domain walls
topic Iron
Gallium arsenide
III-V semiconductors
Ferromagnetic materials
Coercive force
Magnetisation reversal
Magnetic anisotropy
Magnetic hysteresis
Magnetic domain walls
description We have experimentally characterized the magnetization processes of a square array of micron sized circular antidots lithographed on a Fe(001)/GaAs film with its diagonals along the Fe magnetocrystalline easy axes (100). Both the anisotropy and the angular dependence of the magnetization reversal were measured by means of magnetooptic techniques. The coercivity of the loops along the easy and in-plane hard axes of the array increases approximately 2.5 times with respect to that measured in the continuous film region, and the first order anisotropy constant remains equal to that of bulk Fe. The magnetization reversal takes place in two steps for all the loops measured out of the easy and hard axes. We have simulated the magnetization reversal using two different micromagnetic models. In the first one, assuming that the reversal takes place fully inside the array, we have observed that the reversal nucleates at the magnetic inhomogeneities occurring at the antidot boundaries and resulting from magnetostatic energy minimization. In our second model we artificially introduced a domain wall outside the antidot region that governs the magnetization reversal showing a qualitative agreement with the angular dependence of coercivity.
publishDate 2006
dc.date.none.fl_str_mv 2006
2009
2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/19635
url http://hdl.handle.net/10261/19635
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1063/1.2170050
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 10752 bytes
application/octet-stream
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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