Antiparallel interface coupling evidenced by negative rotatable anisotropy in IrMn/NiFe bilayers

Detalhes bibliográficos
Autor(a) principal: Schäfer, Deise
Data de Publicação: 2015
Outros Autores: Grande, Pedro Luis, Pereira, Luis Gustavo, Azevedo, Gustavo de Medeiros, Oliveira, Artur Harres de, Sousa, Marcos Antonio de, Pelegrini, Fernando, Geshev, Julian Penkov
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/129850
Resumo: Negative rotatable anisotropy is estimated via ferromagnetic resonance measurements in as-made, annealed, and ion-irradiated IrMn3/Ni81Fe19 bilayers. Opposite to previous observations, inverse correlation between rotatable anisotropy and coercivity is observed. The exchange-bias field, determined from hysteresis loop measurements, is higher than that obtained from ferromagnetic resonance for all samples. The results are discussed in terms of majority antiparallel coupling and magnetic-field-induced transitions from antiparallel to parallel states of uncompensated spins at ferromagnet/ antiferromagnet interface. We affirm that an observation of negative rotatable anisotropy evidences antiparallel coupling even in systems presenting conventional exchange bias
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spelling Schäfer, DeiseGrande, Pedro LuisPereira, Luis GustavoAzevedo, Gustavo de MedeirosOliveira, Artur Harres deSousa, Marcos Antonio dePelegrini, FernandoGeshev, Julian Penkov2015-11-18T02:38:29Z20150021-8979http://hdl.handle.net/10183/129850000977293Negative rotatable anisotropy is estimated via ferromagnetic resonance measurements in as-made, annealed, and ion-irradiated IrMn3/Ni81Fe19 bilayers. Opposite to previous observations, inverse correlation between rotatable anisotropy and coercivity is observed. The exchange-bias field, determined from hysteresis loop measurements, is higher than that obtained from ferromagnetic resonance for all samples. The results are discussed in terms of majority antiparallel coupling and magnetic-field-induced transitions from antiparallel to parallel states of uncompensated spins at ferromagnet/ antiferromagnet interface. We affirm that an observation of negative rotatable anisotropy evidences antiparallel coupling even in systems presenting conventional exchange biasapplication/pdfengJournal of applied physics. New York. Vol. 117, no. 21 (June 2015), 215301, 6 p.Histerese magnéticaAnisotropia magnéticaMagnetismo de interfaceRessonancia ferromagneticaMateriais ferromagnéticosMateriais antiferromagnéticosForca coercivaLigas de prataLigas de manganêsLigas de ferroLigas de irídioAntiparallel interface coupling evidenced by negative rotatable anisotropy in IrMn/NiFe bilayersEstrangeiroinfo: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:UFRGSORIGINAL000977293.pdf000977293.pdfTexto completo (inglês)application/pdf1543486http://www.lume.ufrgs.br/bitstream/10183/129850/1/000977293.pdf92d3f0abb4b07c209d869c182bf56598MD51TEXT000977293.pdf.txt000977293.pdf.txtExtracted Texttext/plain31180http://www.lume.ufrgs.br/bitstream/10183/129850/2/000977293.pdf.txtdd60c6a3832fe75a2691f8e6aa43aea8MD52THUMBNAIL000977293.pdf.jpg000977293.pdf.jpgGenerated Thumbnailimage/jpeg2139http://www.lume.ufrgs.br/bitstream/10183/129850/3/000977293.pdf.jpg22480e21aba222fead15c2235a4cf610MD5310183/1298502023-09-17 03:31:59.809733oai:www.lume.ufrgs.br:10183/129850Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-17T06:31:59Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Antiparallel interface coupling evidenced by negative rotatable anisotropy in IrMn/NiFe bilayers
title Antiparallel interface coupling evidenced by negative rotatable anisotropy in IrMn/NiFe bilayers
spellingShingle Antiparallel interface coupling evidenced by negative rotatable anisotropy in IrMn/NiFe bilayers
Schäfer, Deise
Histerese magnética
Anisotropia magnética
Magnetismo de interface
Ressonancia ferromagnetica
Materiais ferromagnéticos
Materiais antiferromagnéticos
Forca coerciva
Ligas de prata
Ligas de manganês
Ligas de ferro
Ligas de irídio
title_short Antiparallel interface coupling evidenced by negative rotatable anisotropy in IrMn/NiFe bilayers
title_full Antiparallel interface coupling evidenced by negative rotatable anisotropy in IrMn/NiFe bilayers
title_fullStr Antiparallel interface coupling evidenced by negative rotatable anisotropy in IrMn/NiFe bilayers
title_full_unstemmed Antiparallel interface coupling evidenced by negative rotatable anisotropy in IrMn/NiFe bilayers
title_sort Antiparallel interface coupling evidenced by negative rotatable anisotropy in IrMn/NiFe bilayers
author Schäfer, Deise
author_facet Schäfer, Deise
Grande, Pedro Luis
Pereira, Luis Gustavo
Azevedo, Gustavo de Medeiros
Oliveira, Artur Harres de
Sousa, Marcos Antonio de
Pelegrini, Fernando
Geshev, Julian Penkov
author_role author
author2 Grande, Pedro Luis
Pereira, Luis Gustavo
Azevedo, Gustavo de Medeiros
Oliveira, Artur Harres de
Sousa, Marcos Antonio de
Pelegrini, Fernando
Geshev, Julian Penkov
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Schäfer, Deise
Grande, Pedro Luis
Pereira, Luis Gustavo
Azevedo, Gustavo de Medeiros
Oliveira, Artur Harres de
Sousa, Marcos Antonio de
Pelegrini, Fernando
Geshev, Julian Penkov
dc.subject.por.fl_str_mv Histerese magnética
Anisotropia magnética
Magnetismo de interface
Ressonancia ferromagnetica
Materiais ferromagnéticos
Materiais antiferromagnéticos
Forca coerciva
Ligas de prata
Ligas de manganês
Ligas de ferro
Ligas de irídio
topic Histerese magnética
Anisotropia magnética
Magnetismo de interface
Ressonancia ferromagnetica
Materiais ferromagnéticos
Materiais antiferromagnéticos
Forca coerciva
Ligas de prata
Ligas de manganês
Ligas de ferro
Ligas de irídio
description Negative rotatable anisotropy is estimated via ferromagnetic resonance measurements in as-made, annealed, and ion-irradiated IrMn3/Ni81Fe19 bilayers. Opposite to previous observations, inverse correlation between rotatable anisotropy and coercivity is observed. The exchange-bias field, determined from hysteresis loop measurements, is higher than that obtained from ferromagnetic resonance for all samples. The results are discussed in terms of majority antiparallel coupling and magnetic-field-induced transitions from antiparallel to parallel states of uncompensated spins at ferromagnet/ antiferromagnet interface. We affirm that an observation of negative rotatable anisotropy evidences antiparallel coupling even in systems presenting conventional exchange bias
publishDate 2015
dc.date.accessioned.fl_str_mv 2015-11-18T02:38:29Z
dc.date.issued.fl_str_mv 2015
dc.type.driver.fl_str_mv Estrangeiro
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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/10183/129850
dc.identifier.issn.pt_BR.fl_str_mv 0021-8979
dc.identifier.nrb.pt_BR.fl_str_mv 000977293
identifier_str_mv 0021-8979
000977293
url http://hdl.handle.net/10183/129850
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Journal of applied physics. New York. Vol. 117, no. 21 (June 2015), 215301, 6 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 reponame:Repositório Institucional da UFRGS
instname:Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
instacron_str UFRGS
institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
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