Critical thickness investigation of magnetic properties in exchange-coupled bilayers

Detalhes bibliográficos
Autor(a) principal: Oliveira, Alexandre Barbosa de
Data de Publicação: 2011
Outros Autores: Rodrigues-Suárez, R. L., Vilela-Leão, L. H., Bueno, T., Almeida, J. R. L., Landeros, P., Rezende, S. M., Azevedo, A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/jspui/handle/123456789/28842
https://doi.org/10.1103/PhysRevB.83.224418
Resumo: We present a systematic investigation of the magnetic properties of two series of polycrystalline ferromagneticantiferromagnetic bilayers (FM-AF) of Ni81Fe19(10nm)/Ir20Mn80(tAF) grown by dc magnetron sputtering. One series was grown at an oblique angle of 50◦ and the other one was grown at 0◦. Ferromagnetic resonance (FMR) was used to measure the exchange bias field HE, the rotatable anisotropy field HRA, and the FMR linewidth H as a function of the antiferromagnetic layer thickness tAF. Three relaxation channels due to isotropic Gilbert damping, anisotropic two-magnon scattering, and mosaicity effects are simultaneously distinguished through the angular dependence of the FMR linewidth. In the regime of small IrMn layer thicknesses, not enough to establish the exchange bias anisotropy, the FMR linewidth shows a sharp peak due to the contribution of the two-magnon scattering mechanism. The results presented here are of general importance for understanding the dynamics of magnetization in the FM-AF structures.
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spelling Oliveira, Alexandre Barbosa deRodrigues-Suárez, R. L.Vilela-Leão, L. H.Bueno, T.Almeida, J. R. L.Landeros, P.Rezende, S. M.Azevedo, A.2020-04-29T21:06:15Z2020-04-29T21:06:15Z2011-06-24OLIVEIRA, Alexandre Barbosa de et al. Critical thickness investigation of magnetic properties in exchange-coupled bilayers. Physical Review. B, Condensed Matter and Materials Physics, v. 83, p. 224418, 2011. ISSN 1550-235X versão online. DOI https://doi.org/10.1103/PhysRevB.83.224418. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.83.224418. Acesso em: 29/abr. 2020.1098-0121 (print), 1550-235X (online)https://repositorio.ufrn.br/jspui/handle/123456789/28842https://doi.org/10.1103/PhysRevB.83.224418American Physical SocietyMagnetic propertiesCoupled bilayersCritical thickness investigation of magnetic properties in exchange-coupled bilayersinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleWe present a systematic investigation of the magnetic properties of two series of polycrystalline ferromagneticantiferromagnetic bilayers (FM-AF) of Ni81Fe19(10nm)/Ir20Mn80(tAF) grown by dc magnetron sputtering. One series was grown at an oblique angle of 50◦ and the other one was grown at 0◦. Ferromagnetic resonance (FMR) was used to measure the exchange bias field HE, the rotatable anisotropy field HRA, and the FMR linewidth H as a function of the antiferromagnetic layer thickness tAF. Three relaxation channels due to isotropic Gilbert damping, anisotropic two-magnon scattering, and mosaicity effects are simultaneously distinguished through the angular dependence of the FMR linewidth. In the regime of small IrMn layer thicknesses, not enough to establish the exchange bias anisotropy, the FMR linewidth shows a sharp peak due to the contribution of the two-magnon scattering mechanism. The results presented here are of general importance for understanding the dynamics of magnetization in the FM-AF structures.engreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessORIGINALCritical thickness investigation of magnetic properties in exchange-coupled bilayers_oliveira_2011.pdfCritical thickness investigation of magnetic properties in exchange-coupled bilayers_oliveira_2011.pdfapplication/pdf468399https://repositorio.ufrn.br/bitstream/123456789/28842/1/Critical%20thickness%20investigation%20of%20magnetic%20properties%20in%20exchange-coupled%20bilayers_oliveira_2011.pdf173074fc591ba5fabcf0c5a8dace0647MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/28842/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52TEXTCritical thickness investigation of magnetic properties in exchange-coupled bilayers_oliveira_2011.pdf.txtCritical thickness investigation of magnetic properties in exchange-coupled bilayers_oliveira_2011.pdf.txtExtracted texttext/plain37032https://repositorio.ufrn.br/bitstream/123456789/28842/3/Critical%20thickness%20investigation%20of%20magnetic%20properties%20in%20exchange-coupled%20bilayers_oliveira_2011.pdf.txt55c5bf4d86077886f25cdb337905ccd6MD53THUMBNAILCritical thickness investigation of magnetic properties in exchange-coupled bilayers_oliveira_2011.pdf.jpgCritical thickness investigation of magnetic properties in exchange-coupled bilayers_oliveira_2011.pdf.jpgGenerated Thumbnailimage/jpeg1797https://repositorio.ufrn.br/bitstream/123456789/28842/4/Critical%20thickness%20investigation%20of%20magnetic%20properties%20in%20exchange-coupled%20bilayers_oliveira_2011.pdf.jpg220f98cfb2c80b7f455fb1d70b3ee7f2MD54123456789/288422020-05-03 04:26:13.865oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-05-03T07:26:13Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Critical thickness investigation of magnetic properties in exchange-coupled bilayers
title Critical thickness investigation of magnetic properties in exchange-coupled bilayers
spellingShingle Critical thickness investigation of magnetic properties in exchange-coupled bilayers
Oliveira, Alexandre Barbosa de
Magnetic properties
Coupled bilayers
title_short Critical thickness investigation of magnetic properties in exchange-coupled bilayers
title_full Critical thickness investigation of magnetic properties in exchange-coupled bilayers
title_fullStr Critical thickness investigation of magnetic properties in exchange-coupled bilayers
title_full_unstemmed Critical thickness investigation of magnetic properties in exchange-coupled bilayers
title_sort Critical thickness investigation of magnetic properties in exchange-coupled bilayers
author Oliveira, Alexandre Barbosa de
author_facet Oliveira, Alexandre Barbosa de
Rodrigues-Suárez, R. L.
Vilela-Leão, L. H.
Bueno, T.
Almeida, J. R. L.
Landeros, P.
Rezende, S. M.
Azevedo, A.
author_role author
author2 Rodrigues-Suárez, R. L.
Vilela-Leão, L. H.
Bueno, T.
Almeida, J. R. L.
Landeros, P.
Rezende, S. M.
Azevedo, A.
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Oliveira, Alexandre Barbosa de
Rodrigues-Suárez, R. L.
Vilela-Leão, L. H.
Bueno, T.
Almeida, J. R. L.
Landeros, P.
Rezende, S. M.
Azevedo, A.
dc.subject.por.fl_str_mv Magnetic properties
Coupled bilayers
topic Magnetic properties
Coupled bilayers
description We present a systematic investigation of the magnetic properties of two series of polycrystalline ferromagneticantiferromagnetic bilayers (FM-AF) of Ni81Fe19(10nm)/Ir20Mn80(tAF) grown by dc magnetron sputtering. One series was grown at an oblique angle of 50◦ and the other one was grown at 0◦. Ferromagnetic resonance (FMR) was used to measure the exchange bias field HE, the rotatable anisotropy field HRA, and the FMR linewidth H as a function of the antiferromagnetic layer thickness tAF. Three relaxation channels due to isotropic Gilbert damping, anisotropic two-magnon scattering, and mosaicity effects are simultaneously distinguished through the angular dependence of the FMR linewidth. In the regime of small IrMn layer thicknesses, not enough to establish the exchange bias anisotropy, the FMR linewidth shows a sharp peak due to the contribution of the two-magnon scattering mechanism. The results presented here are of general importance for understanding the dynamics of magnetization in the FM-AF structures.
publishDate 2011
dc.date.issued.fl_str_mv 2011-06-24
dc.date.accessioned.fl_str_mv 2020-04-29T21:06:15Z
dc.date.available.fl_str_mv 2020-04-29T21:06:15Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.citation.fl_str_mv OLIVEIRA, Alexandre Barbosa de et al. Critical thickness investigation of magnetic properties in exchange-coupled bilayers. Physical Review. B, Condensed Matter and Materials Physics, v. 83, p. 224418, 2011. ISSN 1550-235X versão online. DOI https://doi.org/10.1103/PhysRevB.83.224418. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.83.224418. Acesso em: 29/abr. 2020.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/jspui/handle/123456789/28842
dc.identifier.issn.none.fl_str_mv 1098-0121 (print), 1550-235X (online)
dc.identifier.doi.none.fl_str_mv https://doi.org/10.1103/PhysRevB.83.224418
identifier_str_mv OLIVEIRA, Alexandre Barbosa de et al. Critical thickness investigation of magnetic properties in exchange-coupled bilayers. Physical Review. B, Condensed Matter and Materials Physics, v. 83, p. 224418, 2011. ISSN 1550-235X versão online. DOI https://doi.org/10.1103/PhysRevB.83.224418. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.83.224418. Acesso em: 29/abr. 2020.
1098-0121 (print), 1550-235X (online)
url https://repositorio.ufrn.br/jspui/handle/123456789/28842
https://doi.org/10.1103/PhysRevB.83.224418
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dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
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