Magnetization reversal in single ferromagnetic rectangular nanowires

Detalhes bibliográficos
Autor(a) principal: Oliveira, Alexandre Barbosa de
Data de Publicação: 2010
Outros Autores: Silva, Gilvânia Lucia da, Rezende, Sergio Machado, COSTA, Antonio Azevedo da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/jspui/handle/123456789/24384
Resumo: We report on the magnetoresistance (MR) investigation of the magnetization reversal processes in single rectangular nanowire of Permalloy. A set of nanowires with lengths ranging from 6 to 20 μm, thicknesses fixed in 10 nm, and widths between 250 nm and 1.2 μm, was fabricated by means of AFM local anodic oxidation lithography. Magnetoresistive hysteresis loops show an abrupt jump corresponding to the magnetization reversal that depends on the angle between the wire axis and the applied magnetic field direction. The field value corresponding to the abrupt jump of the MR was associated to the nucleation field deduced from the Brown equations. By the angular dependence of this magnetization reversal field we were able to identify the nucleation mode as the magnetization buckling. We have investigated the temperature dependence of the switching field as well as its stochastic nature as a function of the in-plane angle
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spelling Oliveira, Alexandre Barbosa deSilva, Gilvânia Lucia daRezende, Sergio MachadoCOSTA, Antonio Azevedo da2017-11-29T19:52:18Z2017-11-29T19:52:18Z2010OLIVEIRA, Alexandre Barbosa de et al.Magnetization reversal in single ferromagnetic rectangular nanowires. Journal of Physics Conference Series (Online), v. 200, 2010. ISSN 1742-6596. Disponível em: <http://dx.doi.org/10.1088/1742-6596/200/7/072023>. Acesso em: 04 out. 2017.1742-6596https://repositorio.ufrn.br/jspui/handle/123456789/2438410.1088/1742-6596/200/7/072023engIOP PublishingMagnetizationmagnetoresistanceMagnetization reversal in single ferromagnetic rectangular nanowiresinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleWe report on the magnetoresistance (MR) investigation of the magnetization reversal processes in single rectangular nanowire of Permalloy. A set of nanowires with lengths ranging from 6 to 20 μm, thicknesses fixed in 10 nm, and widths between 250 nm and 1.2 μm, was fabricated by means of AFM local anodic oxidation lithography. Magnetoresistive hysteresis loops show an abrupt jump corresponding to the magnetization reversal that depends on the angle between the wire axis and the applied magnetic field direction. The field value corresponding to the abrupt jump of the MR was associated to the nucleation field deduced from the Brown equations. By the angular dependence of this magnetization reversal field we were able to identify the nucleation mode as the magnetization buckling. We have investigated the temperature dependence of the switching field as well as its stochastic nature as a function of the in-plane angleinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALMagnetizationReversal_2010.pdfMagnetizationReversal_2010.pdfapplication/pdf551316https://repositorio.ufrn.br/bitstream/123456789/24384/1/MagnetizationReversal_2010.pdf282fb1f6ed723a3e101c7d1c0f914e7bMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://repositorio.ufrn.br/bitstream/123456789/24384/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52TEXTMagnetizationReversal_2010.pdf.txtMagnetizationReversal_2010.pdf.txtExtracted texttext/plain13099https://repositorio.ufrn.br/bitstream/123456789/24384/3/MagnetizationReversal_2010.pdf.txtf1c09b0448bb616b6f2318d11224ce05MD53THUMBNAILMagnetizationReversal_2010.pdf.jpgMagnetizationReversal_2010.pdf.jpgIM Thumbnailimage/jpeg2970https://repositorio.ufrn.br/bitstream/123456789/24384/4/MagnetizationReversal_2010.pdf.jpge475f094ce70a6e86c63f81b5e5646d1MD54123456789/243842017-11-30 01:33:48.528oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2017-11-30T04:33:48Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Magnetization reversal in single ferromagnetic rectangular nanowires
title Magnetization reversal in single ferromagnetic rectangular nanowires
spellingShingle Magnetization reversal in single ferromagnetic rectangular nanowires
Oliveira, Alexandre Barbosa de
Magnetization
magnetoresistance
title_short Magnetization reversal in single ferromagnetic rectangular nanowires
title_full Magnetization reversal in single ferromagnetic rectangular nanowires
title_fullStr Magnetization reversal in single ferromagnetic rectangular nanowires
title_full_unstemmed Magnetization reversal in single ferromagnetic rectangular nanowires
title_sort Magnetization reversal in single ferromagnetic rectangular nanowires
author Oliveira, Alexandre Barbosa de
author_facet Oliveira, Alexandre Barbosa de
Silva, Gilvânia Lucia da
Rezende, Sergio Machado
COSTA, Antonio Azevedo da
author_role author
author2 Silva, Gilvânia Lucia da
Rezende, Sergio Machado
COSTA, Antonio Azevedo da
author2_role author
author
author
dc.contributor.author.fl_str_mv Oliveira, Alexandre Barbosa de
Silva, Gilvânia Lucia da
Rezende, Sergio Machado
COSTA, Antonio Azevedo da
dc.subject.por.fl_str_mv Magnetization
magnetoresistance
topic Magnetization
magnetoresistance
description We report on the magnetoresistance (MR) investigation of the magnetization reversal processes in single rectangular nanowire of Permalloy. A set of nanowires with lengths ranging from 6 to 20 μm, thicknesses fixed in 10 nm, and widths between 250 nm and 1.2 μm, was fabricated by means of AFM local anodic oxidation lithography. Magnetoresistive hysteresis loops show an abrupt jump corresponding to the magnetization reversal that depends on the angle between the wire axis and the applied magnetic field direction. The field value corresponding to the abrupt jump of the MR was associated to the nucleation field deduced from the Brown equations. By the angular dependence of this magnetization reversal field we were able to identify the nucleation mode as the magnetization buckling. We have investigated the temperature dependence of the switching field as well as its stochastic nature as a function of the in-plane angle
publishDate 2010
dc.date.issued.fl_str_mv 2010
dc.date.accessioned.fl_str_mv 2017-11-29T19:52:18Z
dc.date.available.fl_str_mv 2017-11-29T19:52:18Z
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.Magnetization reversal in single ferromagnetic rectangular nanowires. Journal of Physics Conference Series (Online), v. 200, 2010. ISSN 1742-6596. Disponível em: <http://dx.doi.org/10.1088/1742-6596/200/7/072023>. Acesso em: 04 out. 2017.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/jspui/handle/123456789/24384
dc.identifier.issn.none.fl_str_mv 1742-6596
dc.identifier.doi.none.fl_str_mv 10.1088/1742-6596/200/7/072023
identifier_str_mv OLIVEIRA, Alexandre Barbosa de et al.Magnetization reversal in single ferromagnetic rectangular nanowires. Journal of Physics Conference Series (Online), v. 200, 2010. ISSN 1742-6596. Disponível em: <http://dx.doi.org/10.1088/1742-6596/200/7/072023>. Acesso em: 04 out. 2017.
1742-6596
10.1088/1742-6596/200/7/072023
url https://repositorio.ufrn.br/jspui/handle/123456789/24384
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRN
instname:Universidade Federal do Rio Grande do Norte (UFRN)
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instname_str Universidade Federal do Rio Grande do Norte (UFRN)
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reponame_str Repositório Institucional da UFRN
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