Magnetization dynamics in nanostructures with weak/strong anisotropy
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/103753 |
Resumo: | We investigate the high-frequency response of magnetization dynamics through magnetoimpedance (MI) effect in Permalloy-based multilayered thin films produced with two different non-magnetic metallic spacers: Cu and Ag. Due to the nature of the spacer materials, we are able to play with magnetic properties and to study both systems with weak/strong magnetic anisotropy. We verify very rich features in the magnetoimpedance behavior and high magnetoimpedance ratios, with values above 200%. We compare the MI results obtained in multilayered thin films with distinct spacers and number of bilayers, and discuss them in terms of the different mechanisms that govern the MI changes observed at distinct frequency ranges, intensity of the magnetic anisotropy, alignment between dc magnetic field and anisotropy direction. Besides, by considering a theoretical approach that takes into account two single models together and calculate the transverse magnetic permeability and the MI effect, we support our interpretation via numerical calculations modeling the effect of weak/strong magnetic anisotropy on the MI response. Thus, we confirm that these features are very important for the use of multilayered films in sensor applications and, both the frequency and field response can be tailored to fulfill the requirements of a given device. |
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Andrade, Antonio Marcos Helgueira deCorrêa, Marcio AssolinViegas, Alexandre da CasBohn, FelipeSommer, Rubem Luis2014-09-24T02:13:12Z20140021-8979http://hdl.handle.net/10183/103753000922131We investigate the high-frequency response of magnetization dynamics through magnetoimpedance (MI) effect in Permalloy-based multilayered thin films produced with two different non-magnetic metallic spacers: Cu and Ag. Due to the nature of the spacer materials, we are able to play with magnetic properties and to study both systems with weak/strong magnetic anisotropy. We verify very rich features in the magnetoimpedance behavior and high magnetoimpedance ratios, with values above 200%. We compare the MI results obtained in multilayered thin films with distinct spacers and number of bilayers, and discuss them in terms of the different mechanisms that govern the MI changes observed at distinct frequency ranges, intensity of the magnetic anisotropy, alignment between dc magnetic field and anisotropy direction. Besides, by considering a theoretical approach that takes into account two single models together and calculate the transverse magnetic permeability and the MI effect, we support our interpretation via numerical calculations modeling the effect of weak/strong magnetic anisotropy on the MI response. Thus, we confirm that these features are very important for the use of multilayered films in sensor applications and, both the frequency and field response can be tailored to fulfill the requirements of a given device.application/pdfengJournal of applied physics. New York. Vol. 115, no. 10 (Mar. 2014), 103908, 10 p.Permeabilidade magnéticaAnisotropia magnéticaFilmes finos magneticosFilmes finos metalicosMulticamadas magnéticasMateriais nanoestruturadosNanofabricaçãoAnálise numéricaPermaloiCobrePrataMagnetization dynamics in nanostructures with weak/strong anisotropyEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000922131.pdf000922131.pdfTexto completo (inglês)application/pdf2183343http://www.lume.ufrgs.br/bitstream/10183/103753/1/000922131.pdf85fd7a52b31e9d07f879ca9d76296b10MD51TEXT000922131.pdf.txt000922131.pdf.txtExtracted Texttext/plain48002http://www.lume.ufrgs.br/bitstream/10183/103753/2/000922131.pdf.txt37b3b3b5b092ef8d270c0ee3277ca532MD52THUMBNAIL000922131.pdf.jpg000922131.pdf.jpgGenerated Thumbnailimage/jpeg2041http://www.lume.ufrgs.br/bitstream/10183/103753/3/000922131.pdf.jpgab0014649666cc1af02caab063a3b85bMD5310183/1037532023-07-01 03:38:15.532914oai:www.lume.ufrgs.br:10183/103753Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-01T06:38:15Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Magnetization dynamics in nanostructures with weak/strong anisotropy |
title |
Magnetization dynamics in nanostructures with weak/strong anisotropy |
spellingShingle |
Magnetization dynamics in nanostructures with weak/strong anisotropy Andrade, Antonio Marcos Helgueira de Permeabilidade magnética Anisotropia magnética Filmes finos magneticos Filmes finos metalicos Multicamadas magnéticas Materiais nanoestruturados Nanofabricação Análise numérica Permaloi Cobre Prata |
title_short |
Magnetization dynamics in nanostructures with weak/strong anisotropy |
title_full |
Magnetization dynamics in nanostructures with weak/strong anisotropy |
title_fullStr |
Magnetization dynamics in nanostructures with weak/strong anisotropy |
title_full_unstemmed |
Magnetization dynamics in nanostructures with weak/strong anisotropy |
title_sort |
Magnetization dynamics in nanostructures with weak/strong anisotropy |
author |
Andrade, Antonio Marcos Helgueira de |
author_facet |
Andrade, Antonio Marcos Helgueira de Corrêa, Marcio Assolin Viegas, Alexandre da Cas Bohn, Felipe Sommer, Rubem Luis |
author_role |
author |
author2 |
Corrêa, Marcio Assolin Viegas, Alexandre da Cas Bohn, Felipe Sommer, Rubem Luis |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Andrade, Antonio Marcos Helgueira de Corrêa, Marcio Assolin Viegas, Alexandre da Cas Bohn, Felipe Sommer, Rubem Luis |
dc.subject.por.fl_str_mv |
Permeabilidade magnética Anisotropia magnética Filmes finos magneticos Filmes finos metalicos Multicamadas magnéticas Materiais nanoestruturados Nanofabricação Análise numérica Permaloi Cobre Prata |
topic |
Permeabilidade magnética Anisotropia magnética Filmes finos magneticos Filmes finos metalicos Multicamadas magnéticas Materiais nanoestruturados Nanofabricação Análise numérica Permaloi Cobre Prata |
description |
We investigate the high-frequency response of magnetization dynamics through magnetoimpedance (MI) effect in Permalloy-based multilayered thin films produced with two different non-magnetic metallic spacers: Cu and Ag. Due to the nature of the spacer materials, we are able to play with magnetic properties and to study both systems with weak/strong magnetic anisotropy. We verify very rich features in the magnetoimpedance behavior and high magnetoimpedance ratios, with values above 200%. We compare the MI results obtained in multilayered thin films with distinct spacers and number of bilayers, and discuss them in terms of the different mechanisms that govern the MI changes observed at distinct frequency ranges, intensity of the magnetic anisotropy, alignment between dc magnetic field and anisotropy direction. Besides, by considering a theoretical approach that takes into account two single models together and calculate the transverse magnetic permeability and the MI effect, we support our interpretation via numerical calculations modeling the effect of weak/strong magnetic anisotropy on the MI response. Thus, we confirm that these features are very important for the use of multilayered films in sensor applications and, both the frequency and field response can be tailored to fulfill the requirements of a given device. |
publishDate |
2014 |
dc.date.accessioned.fl_str_mv |
2014-09-24T02:13:12Z |
dc.date.issued.fl_str_mv |
2014 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/103753 |
dc.identifier.issn.pt_BR.fl_str_mv |
0021-8979 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000922131 |
identifier_str_mv |
0021-8979 000922131 |
url |
http://hdl.handle.net/10183/103753 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Journal of applied physics. New York. Vol. 115, no. 10 (Mar. 2014), 103908, 10 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
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Repositório Institucional da UFRGS |
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