Interface effects, magnetic, and magneto-optical properties of Al/Co/V/MgO(100) structures

The magnetic and magneto-optical properties of Al/Co/V/MgO(100) structures and the influence of the Co/V interface for different thicknesses of the Co and V layers have been studied experimentally. From the element-specific hysteresis loops obtained by x-ray magnetic circular dichroism (XMCD) at the...

ver descrição completa

Detalhes bibliográficos
Autores: Huttel, Yves, Clavero Pérez, César, Van der Laan, G., Bencok, P., Johal, T.K., Claydon, J.S., Armelles Reig, Gaspar, Cebollada, Alfonso
Tipo de documento: artigo
Data de publicação:2008
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/11814
Acesso em linha:http://hdl.handle.net/10261/11814
Access Level:Acceso aberto
Palavra-chave:Polarisation
Aluminium
Cobalt
Electron spin
magnesium compounds
magnetic circular dichroism
magnetic hysteresis
magnetic moments
magnetic multilayers
magnetisation reversal
vanadium
id ES_6544ca2cb2eef1e2c0eb9fd1ecd9612f
oai_identifier_str oai:digital.csic.es:10261/11814
network_acronym_str ES
network_name_str España
repository_id_str
spelling Interface effects, magnetic, and magneto-optical properties of Al/Co/V/MgO(100) structuresHuttel, YvesClavero Pérez, CésarVan der Laan, G.Bencok, P.Johal, T.K.Claydon, J.S.Armelles Reig, GasparCebollada, AlfonsoPolarisationAluminiumCobaltElectron spinmagnesium compoundsmagnetic circular dichroismmagnetic hysteresismagnetic momentsmagnetic multilayersmagnetisation reversalvanadiumThe magnetic and magneto-optical properties of Al/Co/V/MgO(100) structures and the influence of the Co/V interface for different thicknesses of the Co and V layers have been studied experimentally. From the element-specific hysteresis loops obtained by x-ray magnetic circular dichroism (XMCD) at the Co and V L3 edges we find that the V layers are magnetically polarized antiparallel to the Co layers and that magnetization reversal occurs at the same magnetic field in both layers. The effect of the V atomic volume and the relative thicknesses of V and Co layers on the magnetic moments of the V and Co atoms are also studied. Contrary to what might be expected, the atomic magnetic moments of the V and Co atoms do not depend on the V atomic volume, however they depend strongly on the thicknesses of the V and Co layers. From the trend in the Co and V atomic magnetic moments as a function of Co and V thicknesses and the absence of any spectroscopic evidence for the formation of a VCo alloy, a long-range spin polarization of the V atoms is proposed. The extracted magneto-optical (MO) constants of V and Co as a function of photon energy clearly evidence a large amount of polarization in the V films in agreement with the XMCD results, which is indicative of the magnetic coupling between Co and V. The experimental MO results and simulations also show the strong influence of these polarized V layers in the MO properties of the complete system. These results, given the absence of spectroscopic evidence for the formation of a VCo alloy, support a long-range magnetization of the V atoms and a reduction of the Co atomic magnetic moments.This research was carried out with the financial support of the Spanish Ministry of Science and Education (NAN2004-09195-C04 and MAT2005-05524-C02-01), Comunidad de Madrid (S-0505/MAT/0194 NANOMAGNET) and the European Commission through the NoE PHOREMOST (FP6/2003/IST/2-511616). M. U. G. thanks the Spanish Ministry of Education for funding through the “Ramón y Cajal” program.Peer reviewedAmerican Physical Society200920092008info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_65011032087 bytesapplication/pdfhttp://hdl.handle.net/10261/11814reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1103/PhysRevB.77.064411http://link.aps.orginfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/118142026-05-22T06:33:51Z
dc.title.none.fl_str_mv Interface effects, magnetic, and magneto-optical properties of Al/Co/V/MgO(100) structures
title Interface effects, magnetic, and magneto-optical properties of Al/Co/V/MgO(100) structures
spellingShingle Interface effects, magnetic, and magneto-optical properties of Al/Co/V/MgO(100) structures
Huttel, Yves
Polarisation
Aluminium
Cobalt
Electron spin
magnesium compounds
magnetic circular dichroism
magnetic hysteresis
magnetic moments
magnetic multilayers
magnetisation reversal
vanadium
title_short Interface effects, magnetic, and magneto-optical properties of Al/Co/V/MgO(100) structures
title_full Interface effects, magnetic, and magneto-optical properties of Al/Co/V/MgO(100) structures
title_fullStr Interface effects, magnetic, and magneto-optical properties of Al/Co/V/MgO(100) structures
title_full_unstemmed Interface effects, magnetic, and magneto-optical properties of Al/Co/V/MgO(100) structures
title_sort Interface effects, magnetic, and magneto-optical properties of Al/Co/V/MgO(100) structures
dc.creator.none.fl_str_mv Huttel, Yves
Clavero Pérez, César
Van der Laan, G.
Bencok, P.
Johal, T.K.
Claydon, J.S.
Armelles Reig, Gaspar
Cebollada, Alfonso
author Huttel, Yves
author_facet Huttel, Yves
Clavero Pérez, César
Van der Laan, G.
Bencok, P.
Johal, T.K.
Claydon, J.S.
Armelles Reig, Gaspar
Cebollada, Alfonso
author_role author
author2 Clavero Pérez, César
Van der Laan, G.
Bencok, P.
Johal, T.K.
Claydon, J.S.
Armelles Reig, Gaspar
Cebollada, Alfonso
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Polarisation
Aluminium
Cobalt
Electron spin
magnesium compounds
magnetic circular dichroism
magnetic hysteresis
magnetic moments
magnetic multilayers
magnetisation reversal
vanadium
topic Polarisation
Aluminium
Cobalt
Electron spin
magnesium compounds
magnetic circular dichroism
magnetic hysteresis
magnetic moments
magnetic multilayers
magnetisation reversal
vanadium
description The magnetic and magneto-optical properties of Al/Co/V/MgO(100) structures and the influence of the Co/V interface for different thicknesses of the Co and V layers have been studied experimentally. From the element-specific hysteresis loops obtained by x-ray magnetic circular dichroism (XMCD) at the Co and V L3 edges we find that the V layers are magnetically polarized antiparallel to the Co layers and that magnetization reversal occurs at the same magnetic field in both layers. The effect of the V atomic volume and the relative thicknesses of V and Co layers on the magnetic moments of the V and Co atoms are also studied. Contrary to what might be expected, the atomic magnetic moments of the V and Co atoms do not depend on the V atomic volume, however they depend strongly on the thicknesses of the V and Co layers. From the trend in the Co and V atomic magnetic moments as a function of Co and V thicknesses and the absence of any spectroscopic evidence for the formation of a VCo alloy, a long-range spin polarization of the V atoms is proposed. The extracted magneto-optical (MO) constants of V and Co as a function of photon energy clearly evidence a large amount of polarization in the V films in agreement with the XMCD results, which is indicative of the magnetic coupling between Co and V. The experimental MO results and simulations also show the strong influence of these polarized V layers in the MO properties of the complete system. These results, given the absence of spectroscopic evidence for the formation of a VCo alloy, support a long-range magnetization of the V atoms and a reduction of the Co atomic magnetic moments.
publishDate 2008
dc.date.none.fl_str_mv 2008
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/10261/11814
url http://hdl.handle.net/10261/11814
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1103/PhysRevB.77.064411
http://link.aps.org
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1032087 bytes
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
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
_version_ 1869409730326167552
score 15,811543

Registros relacionados