Critical thickness investigation of magnetic properties in exchange-coupled bilayers
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , , , , |
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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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 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
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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eng |
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eng |
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openAccess |
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American Physical Society |
publisher.none.fl_str_mv |
American Physical Society |
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