Phase transitions in antiferromagnetic superlattices

Detalhes bibliográficos
Autor(a) principal: Carriço, Artur da Silva
Data de Publicação: 1992
Outros Autores: Camley, A. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/jspui/handle/123456789/28848
https://doi.org/10.1103/PhysRevB.45.13117
Resumo: We investigate the temperature dependence of the magnetization of films and superlattices of uniaxial antiferromagnets using a self-consistent, mean-field approach and apply the theory to FeF2/CoF2 superlattices. The number of magnetic phase transitions in this system (one or two) depends on the thicknesses of the films in the superlattice and on the interface exchange constant. Weak interface coupling leads to two transitions as do thick films. Our findings are in good agreement with recent experimental results and indicate that the FeF2/CoF2 system displays strong interface coupling.
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spelling Carriço, Artur da SilvaCamley, A. S.2020-04-29T22:24:14Z2020-04-29T22:24:14Z1992-06-01CARRIÇO, Artur da Silva; CAMLEY, A. S. Phase transitions in antiferromagnetic superlattices. Physical Review B - Solid State, v. 45, p. 13117-13121, 1992. ISSN 2469-9969 versão online. DOI https://doi.org/10.1103/PhysRevB.45.13117. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.45.13117. Acesso em: 29 abr. 2020.2469-9969 (online), 2469-9950 (print)https://repositorio.ufrn.br/jspui/handle/123456789/28848https://doi.org/10.1103/PhysRevB.45.13117We investigate the temperature dependence of the magnetization of films and superlattices of uniaxial antiferromagnets using a self-consistent, mean-field approach and apply the theory to FeF2/CoF2 superlattices. The number of magnetic phase transitions in this system (one or two) depends on the thicknesses of the films in the superlattice and on the interface exchange constant. Weak interface coupling leads to two transitions as do thick films. Our findings are in good agreement with recent experimental results and indicate that the FeF2/CoF2 system displays strong interface coupling.We investigate the temperature dependence of the magnetization of films and superlattices of uniaxial antiferromagnets using a self-consistent, mean-field approach and apply the theory to FeF2/CoF2 superlattices. The number of magnetic phase transitions in this system (one or two) depends on the thicknesses of the films in the superlattice and on the interface exchange constant. Weak interface coupling leads to two transitions as do thick films. Our findings are in good agreement with recent experimental results and indicate that the FeF2/CoF2 system displays strong interface coupling.American Physical SocietyPhase transitionsAntiferromagnetic superlatticesPhase transitions in antiferromagnetic superlatticesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessORIGINALPhaseTransitionsInAntiferromagneticSuperlattices_1992.pdfPhaseTransitionsInAntiferromagneticSuperlattices_1992.pdfapplication/pdf174842https://repositorio.ufrn.br/bitstream/123456789/28848/1/PhaseTransitionsInAntiferromagneticSuperlattices_1992.pdf9fd9c3b442f10376d442d422cb6d826fMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/28848/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52TEXTPhaseTransitionsInAntiferromagneticSuperlattices_1992.pdf.txtPhaseTransitionsInAntiferromagneticSuperlattices_1992.pdf.txtExtracted texttext/plain17682https://repositorio.ufrn.br/bitstream/123456789/28848/3/PhaseTransitionsInAntiferromagneticSuperlattices_1992.pdf.txte3d53d75323ad11a2caf7fc66140fbd0MD53THUMBNAILPhaseTransitionsInAntiferromagneticSuperlattices_1992.pdf.jpgPhaseTransitionsInAntiferromagneticSuperlattices_1992.pdf.jpgGenerated Thumbnailimage/jpeg979https://repositorio.ufrn.br/bitstream/123456789/28848/4/PhaseTransitionsInAntiferromagneticSuperlattices_1992.pdf.jpgbc177e95802689fad4ac7de54e0c6e27MD54123456789/288482020-05-05 01:24:25.195oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-05-05T04:24:25Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Phase transitions in antiferromagnetic superlattices
title Phase transitions in antiferromagnetic superlattices
spellingShingle Phase transitions in antiferromagnetic superlattices
Carriço, Artur da Silva
Phase transitions
Antiferromagnetic superlattices
title_short Phase transitions in antiferromagnetic superlattices
title_full Phase transitions in antiferromagnetic superlattices
title_fullStr Phase transitions in antiferromagnetic superlattices
title_full_unstemmed Phase transitions in antiferromagnetic superlattices
title_sort Phase transitions in antiferromagnetic superlattices
author Carriço, Artur da Silva
author_facet Carriço, Artur da Silva
Camley, A. S.
author_role author
author2 Camley, A. S.
author2_role author
dc.contributor.author.fl_str_mv Carriço, Artur da Silva
Camley, A. S.
dc.subject.por.fl_str_mv Phase transitions
Antiferromagnetic superlattices
topic Phase transitions
Antiferromagnetic superlattices
description We investigate the temperature dependence of the magnetization of films and superlattices of uniaxial antiferromagnets using a self-consistent, mean-field approach and apply the theory to FeF2/CoF2 superlattices. The number of magnetic phase transitions in this system (one or two) depends on the thicknesses of the films in the superlattice and on the interface exchange constant. Weak interface coupling leads to two transitions as do thick films. Our findings are in good agreement with recent experimental results and indicate that the FeF2/CoF2 system displays strong interface coupling.
publishDate 1992
dc.date.issued.fl_str_mv 1992-06-01
dc.date.accessioned.fl_str_mv 2020-04-29T22:24:14Z
dc.date.available.fl_str_mv 2020-04-29T22:24:14Z
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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dc.identifier.citation.fl_str_mv CARRIÇO, Artur da Silva; CAMLEY, A. S. Phase transitions in antiferromagnetic superlattices. Physical Review B - Solid State, v. 45, p. 13117-13121, 1992. ISSN 2469-9969 versão online. DOI https://doi.org/10.1103/PhysRevB.45.13117. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.45.13117. Acesso em: 29 abr. 2020.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/jspui/handle/123456789/28848
dc.identifier.issn.none.fl_str_mv 2469-9969 (online), 2469-9950 (print)
dc.identifier.doi.none.fl_str_mv https://doi.org/10.1103/PhysRevB.45.13117
identifier_str_mv CARRIÇO, Artur da Silva; CAMLEY, A. S. Phase transitions in antiferromagnetic superlattices. Physical Review B - Solid State, v. 45, p. 13117-13121, 1992. ISSN 2469-9969 versão online. DOI https://doi.org/10.1103/PhysRevB.45.13117. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.45.13117. Acesso em: 29 abr. 2020.
2469-9969 (online), 2469-9950 (print)
url https://repositorio.ufrn.br/jspui/handle/123456789/28848
https://doi.org/10.1103/PhysRevB.45.13117
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language eng
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dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRN
instname:Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
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