Estudo de exchange bias via magnetorresistência anisotrópica
Main Author: | |
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Publication Date: | 2013 |
Format: | Master thesis |
Language: | por |
Source: | Manancial - Repositório Digital da UFSM |
Download full: | http://repositorio.ufsm.br/handle/1/9237 |
Summary: | Anisotropic magnetoresistance (AMR) corresponds to the change of R in an ferromagnetic material with the angle between electric current and magnetization. Sensors using this effect are suited to detect both angular and linear displacements. In this work, structural, magnetic and electric characterization were performed in order to study the exchange interaction between antiferromagnetic IrMn and ferromagnetic NiFe, in a bilayer and a multilayer. Simulations of the AMR measurements were performed and showed good agreement with the experimental data. Different anisotropy field values were observed. The difference between the anisotropy field and the exchange field values is responsible for the different AMR data sets extracted from each sample. The model takes into account the, anisotropy (uniaxial), Zeeman, and exchange-bias (unidirectional) energies was used to explain the observed behavior. |
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2017-05-052017-05-052013-08-15ROSA, Diego Saldanha da. Study of exchange bias via anisotropic magnetoresistance. 2013. 46 f. Dissertação (Mestrado em Física) - Universidade Federal de Santa Maria, Santa Maria, 2013.http://repositorio.ufsm.br/handle/1/9237Anisotropic magnetoresistance (AMR) corresponds to the change of R in an ferromagnetic material with the angle between electric current and magnetization. Sensors using this effect are suited to detect both angular and linear displacements. In this work, structural, magnetic and electric characterization were performed in order to study the exchange interaction between antiferromagnetic IrMn and ferromagnetic NiFe, in a bilayer and a multilayer. Simulations of the AMR measurements were performed and showed good agreement with the experimental data. Different anisotropy field values were observed. The difference between the anisotropy field and the exchange field values is responsible for the different AMR data sets extracted from each sample. The model takes into account the, anisotropy (uniaxial), Zeeman, and exchange-bias (unidirectional) energies was used to explain the observed behavior.Magnetorresistência anisotrópica (AMR) consiste na variação da resistência de um material ferromagnético em função do ângulo entre a corrente elétrica e a magnetização do material, o que faz com que sensores que utilizam este efeito sejam promissores para medidas de posição tanto angulares quanto lineares. Neste trabalho, caracterização estrutural, magnética e elétrica foram realizadas para estudar a interação de troca entre camadas antiferromagnética de IrMn e ferromagnética de NiFe em uma bicamada e uma multicamada. Simulações das medidas de AMR foram realizadas e boa concordância entre os dados experimentais e os simulados foi obtida. Diferentes valores de campos de anisotropias foram observados. A diferença entre o campo de anisotropia unidirecional e o campo de exchange é responsável pela diferença entre as medidas de AMR obtidas. Um modelo que considera as energias de anisotropia (uniaxial), Zeeman e de exchangebias (unidirecional) foi usado para explicar o comportamento observado.Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorapplication/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em FísicaUFSMBRFísicaMagnetorresistência anisotrópicaAnisotropiaSimulaçãoAnisotropic magnetoresistanceExchange biasAnisotropySimulationCNPQ::CIENCIAS EXATAS E DA TERRA::FISICAEstudo de exchange bias via magnetorresistência anisotrópicaStudy of exchange bias via anisotropic magnetoresistanceinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisDorneles, Lucio Strazzaboscohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4795059E0Bohn, Felipehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4771339D6Calegari, Eleonir Joãohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4765559T0http://lattes.cnpq.br/2154789200595625Rosa, Diego Saldanha da100500000006400500500500300e5de4f50-b352-48fb-a699-ffab7b7d8f1da851c95c-25db-4f15-aa53-0c975993928d3e7d550d-6f55-4aef-90a6-50175c89c191b692b3df-83b9-408c-8d18-796e1635d63finfo:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALROSA, DIEGO SALDANHA DA.pdfapplication/pdf3780542http://repositorio.ufsm.br/bitstream/1/9237/1/ROSA%2c%20DIEGO%20SALDANHA%20DA.pdfee6f098f93e489432090232445273e41MD51TEXTROSA, DIEGO SALDANHA DA.pdf.txtROSA, DIEGO SALDANHA DA.pdf.txtExtracted texttext/plain68478http://repositorio.ufsm.br/bitstream/1/9237/2/ROSA%2c%20DIEGO%20SALDANHA%20DA.pdf.txt27f3ecf8fa9dacca9166edd42bd44364MD52THUMBNAILROSA, DIEGO SALDANHA DA.pdf.jpgROSA, DIEGO SALDANHA DA.pdf.jpgIM Thumbnailimage/jpeg4724http://repositorio.ufsm.br/bitstream/1/9237/3/ROSA%2c%20DIEGO%20SALDANHA%20DA.pdf.jpgd2dece617a6b8140895d68a0b292aeb3MD531/92372022-07-01 10:58:23.952oai:repositorio.ufsm.br:1/9237Repositório Institucionalhttp://repositorio.ufsm.br/PUBhttp://repositorio.ufsm.br/oai/requestopendoar:39132022-07-01T13:58:23Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Estudo de exchange bias via magnetorresistência anisotrópica |
dc.title.alternative.eng.fl_str_mv |
Study of exchange bias via anisotropic magnetoresistance |
title |
Estudo de exchange bias via magnetorresistência anisotrópica |
spellingShingle |
Estudo de exchange bias via magnetorresistência anisotrópica Rosa, Diego Saldanha da Magnetorresistência anisotrópica Anisotropia Simulação Anisotropic magnetoresistance Exchange bias Anisotropy Simulation CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA |
title_short |
Estudo de exchange bias via magnetorresistência anisotrópica |
title_full |
Estudo de exchange bias via magnetorresistência anisotrópica |
title_fullStr |
Estudo de exchange bias via magnetorresistência anisotrópica |
title_full_unstemmed |
Estudo de exchange bias via magnetorresistência anisotrópica |
title_sort |
Estudo de exchange bias via magnetorresistência anisotrópica |
author |
Rosa, Diego Saldanha da |
author_facet |
Rosa, Diego Saldanha da |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Dorneles, Lucio Strazzabosco |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4795059E0 |
dc.contributor.referee1.fl_str_mv |
Bohn, Felipe |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4771339D6 |
dc.contributor.referee2.fl_str_mv |
Calegari, Eleonir João |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4765559T0 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/2154789200595625 |
dc.contributor.author.fl_str_mv |
Rosa, Diego Saldanha da |
contributor_str_mv |
Dorneles, Lucio Strazzabosco Bohn, Felipe Calegari, Eleonir João |
dc.subject.por.fl_str_mv |
Magnetorresistência anisotrópica Anisotropia Simulação |
topic |
Magnetorresistência anisotrópica Anisotropia Simulação Anisotropic magnetoresistance Exchange bias Anisotropy Simulation CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA |
dc.subject.eng.fl_str_mv |
Anisotropic magnetoresistance Exchange bias Anisotropy Simulation |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA |
description |
Anisotropic magnetoresistance (AMR) corresponds to the change of R in an ferromagnetic material with the angle between electric current and magnetization. Sensors using this effect are suited to detect both angular and linear displacements. In this work, structural, magnetic and electric characterization were performed in order to study the exchange interaction between antiferromagnetic IrMn and ferromagnetic NiFe, in a bilayer and a multilayer. Simulations of the AMR measurements were performed and showed good agreement with the experimental data. Different anisotropy field values were observed. The difference between the anisotropy field and the exchange field values is responsible for the different AMR data sets extracted from each sample. The model takes into account the, anisotropy (uniaxial), Zeeman, and exchange-bias (unidirectional) energies was used to explain the observed behavior. |
publishDate |
2013 |
dc.date.issued.fl_str_mv |
2013-08-15 |
dc.date.accessioned.fl_str_mv |
2017-05-05 |
dc.date.available.fl_str_mv |
2017-05-05 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
ROSA, Diego Saldanha da. Study of exchange bias via anisotropic magnetoresistance. 2013. 46 f. Dissertação (Mestrado em Física) - Universidade Federal de Santa Maria, Santa Maria, 2013. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/9237 |
identifier_str_mv |
ROSA, Diego Saldanha da. Study of exchange bias via anisotropic magnetoresistance. 2013. 46 f. Dissertação (Mestrado em Física) - Universidade Federal de Santa Maria, Santa Maria, 2013. |
url |
http://repositorio.ufsm.br/handle/1/9237 |
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por |
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por |
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Universidade Federal de Santa Maria |
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Programa de Pós-Graduação em Física |
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UFSM |
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BR |
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Física |
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Universidade Federal de Santa Maria |
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