Heat capacity of compensated F/AF bilayers

Detalhes bibliográficos
Autor(a) principal: Silva, M. L.
Data de Publicação: 2005
Outros Autores: Dantas, Ana L., Carriço, Artur da Silva
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/jspui/handle/123456789/28814
https://doi.org/10.1016/j.ssc.2005.04.008
Resumo: We report a theoretical study of the magnetic heat capacity, cV(T), of exchange coupled compensated ferromagnet/antiferromagnetic bilayers. We show that cV(T) may display a large peak at the temperature TR where the interface magnetic frustration induces a 90° reorientation of the F layer. We study Fe/FeF2 bilayers and show that TR and the magnitude of the cV(T) peak depend on the strength of the interface exchange. We suggest how the sign of the interface exchange energy parameter can be investigated using features produced by external fields.
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spelling Silva, M. L.Dantas, Ana L.Carriço, Artur da Silva2020-04-20T11:03:45Z2020-04-20T11:03:45Z2005SILVA, Melquisedec Lourenço da; DANTAS, Ana Lúcia; CARRIÇO, A. S. Heat Capacity of Compensated F/AF Bilayers. Solid State Communications, Inglaterra, v. 135, n.11-12, p. 769-774, 2005. ISSN 0038-1098. DOI https://doi.org/10.1016/j.ssc.2005.04.008. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0038109805003479. Acesso em: 20 abr. 2020.0038-1098https://repositorio.ufrn.br/jspui/handle/123456789/28814https://doi.org/10.1016/j.ssc.2005.04.008ELSEVIERA. Magnetic bilayersD. Interface exchangeD. ReorientationHeat capacity of compensated F/AF bilayersinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleWe report a theoretical study of the magnetic heat capacity, cV(T), of exchange coupled compensated ferromagnet/antiferromagnetic bilayers. We show that cV(T) may display a large peak at the temperature TR where the interface magnetic frustration induces a 90° reorientation of the F layer. We study Fe/FeF2 bilayers and show that TR and the magnitude of the cV(T) peak depend on the strength of the interface exchange. We suggest how the sign of the interface exchange energy parameter can be investigated using features produced by external fields.engreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessORIGINALHeatCapacityOfCompensated_Carrico_2005.pdfHeatCapacityOfCompensated_Carrico_2005.pdfapplication/pdf185457https://repositorio.ufrn.br/bitstream/123456789/28814/1/HeatCapacityOfCompensated_Carrico_2005.pdf4c6a93f489a880a0556a37ebec7e9602MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/28814/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52TEXTHeatCapacityOfCompensated_Carrico_2005.pdf.txtHeatCapacityOfCompensated_Carrico_2005.pdf.txtExtracted texttext/plain25770https://repositorio.ufrn.br/bitstream/123456789/28814/3/HeatCapacityOfCompensated_Carrico_2005.pdf.txt57ce85112438de5fdf794019a6a015d8MD53THUMBNAILHeatCapacityOfCompensated_Carrico_2005.pdf.jpgHeatCapacityOfCompensated_Carrico_2005.pdf.jpgGenerated Thumbnailimage/jpeg1764https://repositorio.ufrn.br/bitstream/123456789/28814/4/HeatCapacityOfCompensated_Carrico_2005.pdf.jpg49049448a942b17b1ac1ad9862554956MD54123456789/288142020-04-26 04:30:38.211oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-04-26T07:30:38Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Heat capacity of compensated F/AF bilayers
title Heat capacity of compensated F/AF bilayers
spellingShingle Heat capacity of compensated F/AF bilayers
Silva, M. L.
A. Magnetic bilayers
D. Interface exchange
D. Reorientation
title_short Heat capacity of compensated F/AF bilayers
title_full Heat capacity of compensated F/AF bilayers
title_fullStr Heat capacity of compensated F/AF bilayers
title_full_unstemmed Heat capacity of compensated F/AF bilayers
title_sort Heat capacity of compensated F/AF bilayers
author Silva, M. L.
author_facet Silva, M. L.
Dantas, Ana L.
Carriço, Artur da Silva
author_role author
author2 Dantas, Ana L.
Carriço, Artur da Silva
author2_role author
author
dc.contributor.author.fl_str_mv Silva, M. L.
Dantas, Ana L.
Carriço, Artur da Silva
dc.subject.por.fl_str_mv A. Magnetic bilayers
D. Interface exchange
D. Reorientation
topic A. Magnetic bilayers
D. Interface exchange
D. Reorientation
description We report a theoretical study of the magnetic heat capacity, cV(T), of exchange coupled compensated ferromagnet/antiferromagnetic bilayers. We show that cV(T) may display a large peak at the temperature TR where the interface magnetic frustration induces a 90° reorientation of the F layer. We study Fe/FeF2 bilayers and show that TR and the magnitude of the cV(T) peak depend on the strength of the interface exchange. We suggest how the sign of the interface exchange energy parameter can be investigated using features produced by external fields.
publishDate 2005
dc.date.issued.fl_str_mv 2005
dc.date.accessioned.fl_str_mv 2020-04-20T11:03:45Z
dc.date.available.fl_str_mv 2020-04-20T11:03:45Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.citation.fl_str_mv SILVA, Melquisedec Lourenço da; DANTAS, Ana Lúcia; CARRIÇO, A. S. Heat Capacity of Compensated F/AF Bilayers. Solid State Communications, Inglaterra, v. 135, n.11-12, p. 769-774, 2005. ISSN 0038-1098. DOI https://doi.org/10.1016/j.ssc.2005.04.008. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0038109805003479. Acesso em: 20 abr. 2020.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/jspui/handle/123456789/28814
dc.identifier.issn.none.fl_str_mv 0038-1098
dc.identifier.doi.none.fl_str_mv https://doi.org/10.1016/j.ssc.2005.04.008
identifier_str_mv SILVA, Melquisedec Lourenço da; DANTAS, Ana Lúcia; CARRIÇO, A. S. Heat Capacity of Compensated F/AF Bilayers. Solid State Communications, Inglaterra, v. 135, n.11-12, p. 769-774, 2005. ISSN 0038-1098. DOI https://doi.org/10.1016/j.ssc.2005.04.008. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0038109805003479. Acesso em: 20 abr. 2020.
0038-1098
url https://repositorio.ufrn.br/jspui/handle/123456789/28814
https://doi.org/10.1016/j.ssc.2005.04.008
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