Ferromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayers

Detalhes bibliográficos
Autor(a) principal: Carriço, Artur da Silva
Data de Publicação: 2012
Outros Autores: Dantas, Ana L., Oliveira, L. L., Silva, M. L.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/jspui/handle/123456789/28682
https://doi.org/10.1063/1.4757032
Resumo: We report a theoretical study of the ferromagnetic resonance (FMR) frequency Ω(H) of Fe/FeF2(110) and Fe/MnF2(110) uniaxial anisotropy compensated bilayers. We show that under external field perpendicular to the anisotropy axis, the uniform mode of the Fe-film becomes soft at an external field strength (H∗=HFA−H⊥int) smaller than the Fe anisotropy field. For strong interface exchange coupling, there is a gap in the FMR spectrum. In this case, Ω(H) is a monotonically increasing function of the external field strength and for any value of the external field strength Ω(H)>Ω(0). The value of the effective interface field downshifts (H⊥int) and the value of Ω(0) may be used to estimate the interface exchange energy.
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spelling Carriço, Artur da SilvaDantas, Ana L.Oliveira, L. L.Silva, M. L.2020-03-30T15:14:31Z2020-03-30T15:14:31Z2012-10-02DANTAS, Ana L.; OLIVEIRA, L. L.; SILVA, M. L. ; CARRICÇO, Artur da Silva. Ferromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayers. Journal of Applied Physics, v. 112, n. 7, p. 073907, 2012. Disponível em: https://aip.scitation.org/doi/10.1063/1.4757032 . Acesso: 27. mar. 2012.https://repositorio.ufrn.br/jspui/handle/123456789/28682https://doi.org/10.1063/1.4757032AIP Publishing LLCFerromagnetic resonanceFerromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayersinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleWe report a theoretical study of the ferromagnetic resonance (FMR) frequency Ω(H) of Fe/FeF2(110) and Fe/MnF2(110) uniaxial anisotropy compensated bilayers. We show that under external field perpendicular to the anisotropy axis, the uniform mode of the Fe-film becomes soft at an external field strength (H∗=HFA−H⊥int) smaller than the Fe anisotropy field. For strong interface exchange coupling, there is a gap in the FMR spectrum. In this case, Ω(H) is a monotonically increasing function of the external field strength and for any value of the external field strength Ω(H)>Ω(0). The value of the effective interface field downshifts (H⊥int) and the value of Ω(0) may be used to estimate the interface exchange energy.engreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessORIGINALFerromagneticResonanceOfCompensatedferromagneticantiferromagneticbilayers_Carrico_2012.pdfFerromagneticResonanceOfCompensatedferromagneticantiferromagneticbilayers_Carrico_2012.pdfapplication/pdf1880829https://repositorio.ufrn.br/bitstream/123456789/28682/1/FerromagneticResonanceOfCompensatedferromagneticantiferromagneticbilayers_Carrico_2012.pdf55ce80b7cc2f15b7fa224f2a19d77188MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/28682/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52TEXTFerromagneticResonanceOfCompensatedferromagneticantiferromagneticbilayers_Carrico_2012.pdf.txtFerromagneticResonanceOfCompensatedferromagneticantiferromagneticbilayers_Carrico_2012.pdf.txtExtracted texttext/plain35482https://repositorio.ufrn.br/bitstream/123456789/28682/3/FerromagneticResonanceOfCompensatedferromagneticantiferromagneticbilayers_Carrico_2012.pdf.txt9c3eec521abfc85f6fc2b716e3af5738MD53THUMBNAILFerromagneticResonanceOfCompensatedferromagneticantiferromagneticbilayers_Carrico_2012.pdf.jpgFerromagneticResonanceOfCompensatedferromagneticantiferromagneticbilayers_Carrico_2012.pdf.jpgGenerated Thumbnailimage/jpeg1697https://repositorio.ufrn.br/bitstream/123456789/28682/4/FerromagneticResonanceOfCompensatedferromagneticantiferromagneticbilayers_Carrico_2012.pdf.jpgd962a32856369139dcd1f9ac83946a3fMD54123456789/286822020-05-05 01:24:56.409oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-05-05T04:24:56Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Ferromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayers
title Ferromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayers
spellingShingle Ferromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayers
Carriço, Artur da Silva
Ferromagnetic resonance
title_short Ferromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayers
title_full Ferromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayers
title_fullStr Ferromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayers
title_full_unstemmed Ferromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayers
title_sort Ferromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayers
author Carriço, Artur da Silva
author_facet Carriço, Artur da Silva
Dantas, Ana L.
Oliveira, L. L.
Silva, M. L.
author_role author
author2 Dantas, Ana L.
Oliveira, L. L.
Silva, M. L.
author2_role author
author
author
dc.contributor.author.fl_str_mv Carriço, Artur da Silva
Dantas, Ana L.
Oliveira, L. L.
Silva, M. L.
dc.subject.por.fl_str_mv Ferromagnetic resonance
topic Ferromagnetic resonance
description We report a theoretical study of the ferromagnetic resonance (FMR) frequency Ω(H) of Fe/FeF2(110) and Fe/MnF2(110) uniaxial anisotropy compensated bilayers. We show that under external field perpendicular to the anisotropy axis, the uniform mode of the Fe-film becomes soft at an external field strength (H∗=HFA−H⊥int) smaller than the Fe anisotropy field. For strong interface exchange coupling, there is a gap in the FMR spectrum. In this case, Ω(H) is a monotonically increasing function of the external field strength and for any value of the external field strength Ω(H)>Ω(0). The value of the effective interface field downshifts (H⊥int) and the value of Ω(0) may be used to estimate the interface exchange energy.
publishDate 2012
dc.date.issued.fl_str_mv 2012-10-02
dc.date.accessioned.fl_str_mv 2020-03-30T15:14:31Z
dc.date.available.fl_str_mv 2020-03-30T15:14:31Z
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 DANTAS, Ana L.; OLIVEIRA, L. L.; SILVA, M. L. ; CARRICÇO, Artur da Silva. Ferromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayers. Journal of Applied Physics, v. 112, n. 7, p. 073907, 2012. Disponível em: https://aip.scitation.org/doi/10.1063/1.4757032 . Acesso: 27. mar. 2012.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/jspui/handle/123456789/28682
dc.identifier.doi.none.fl_str_mv https://doi.org/10.1063/1.4757032
identifier_str_mv DANTAS, Ana L.; OLIVEIRA, L. L.; SILVA, M. L. ; CARRICÇO, Artur da Silva. Ferromagnetic resonance of compensated ferromagnetic/antiferromagnetic bilayers. Journal of Applied Physics, v. 112, n. 7, p. 073907, 2012. Disponível em: https://aip.scitation.org/doi/10.1063/1.4757032 . Acesso: 27. mar. 2012.
url https://repositorio.ufrn.br/jspui/handle/123456789/28682
https://doi.org/10.1063/1.4757032
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dc.publisher.none.fl_str_mv AIP Publishing LLC
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