Surface-induced low-field instability of antiferromagnetic multilayers
Autor(a) principal: | |
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Data de Publicação: | 1999 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/jspui/handle/123456789/28855 https://doi.org/10.1103/PhysRevB.59.1223 |
Resumo: | We discuss the surface-induced low-field instability of the antiferromagnetic phase of magnetic multilayers. The threshold field is calculated analytically for multilayers of arbitrary thickness containing an even number of layers. We show that the threshold is given by HSSF=5AHeHa1Ha 2 , where He and Ha are the effective exchange and anisotropy fields. The effective anisotropy field Ha may include both uniaxial and fourfold crystalline anisotropy. Numerical simulations of the equilibrium phases, based on a self-consistent effective field method, are used to obtain the magnetization pattern. We find that thick uniaxial multilayers display a three-stage transition from the antiferromagnetic to the field-aligned phases, whereas in thin multilayers the transition is from the antiferromagnetic to a nearly spin-flop structure, which gradually aligns with the applied field. If the films composing the multilayer have uniaxial and crystalline anisotropy, the magnetization profile in the multilayer and the nature of the transition depend on the relative values of the uniaxial and crystalline anisotropies. |
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Carriço, Artur da SilvaDantas, Ana Lucia2020-04-29T23:25:26Z2020-04-29T23:25:26Z1999-01-01CARRIÇO, Artur da Silva; DANTAS, Ana Lucia. Surface-induced low-field instability of antiferromagnetic multilayers. Physical Review. B: Condensed Matter and Materials Physics), [s. l.], v. 59, n.2, p. 1223-1231, 1999. ISSN 2469-9969 versão online. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.59.1223. Acesso em: 29 abr. 2020.2469-9969 (online), 2469-9950 (print).https://repositorio.ufrn.br/jspui/handle/123456789/28855https://doi.org/10.1103/PhysRevB.59.1223We discuss the surface-induced low-field instability of the antiferromagnetic phase of magnetic multilayers. The threshold field is calculated analytically for multilayers of arbitrary thickness containing an even number of layers. We show that the threshold is given by HSSF=5AHeHa1Ha 2 , where He and Ha are the effective exchange and anisotropy fields. The effective anisotropy field Ha may include both uniaxial and fourfold crystalline anisotropy. Numerical simulations of the equilibrium phases, based on a self-consistent effective field method, are used to obtain the magnetization pattern. We find that thick uniaxial multilayers display a three-stage transition from the antiferromagnetic to the field-aligned phases, whereas in thin multilayers the transition is from the antiferromagnetic to a nearly spin-flop structure, which gradually aligns with the applied field. If the films composing the multilayer have uniaxial and crystalline anisotropy, the magnetization profile in the multilayer and the nature of the transition depend on the relative values of the uniaxial and crystalline anisotropies.We discuss the surface-induced low-field instability of the antiferromagnetic phase of magnetic multilayers. The threshold field is calculated analytically for multilayers of arbitrary thickness containing an even number of layers. We show that the threshold is given by HSSF=5AHeHa1Ha 2 , where He and Ha are the effective exchange and anisotropy fields. The effective anisotropy field Ha may include both uniaxial and fourfold crystalline anisotropy. Numerical simulations of the equilibrium phases, based on a self-consistent effective field method, are used to obtain the magnetization pattern. We find that thick uniaxial multilayers display a three-stage transition from the antiferromagnetic to the field-aligned phases, whereas in thin multilayers the transition is from the antiferromagnetic to a nearly spin-flop structure, which gradually aligns with the applied field. If the films composing the multilayer have uniaxial and crystalline anisotropy, the magnetization profile in the multilayer and the nature of the transition depend on the relative values of the uniaxial and crystalline anisotropies.American Physical SocietySurface-inducedLow-fieldInstabilityAntiferromagnetic multilayersSurface-induced low-field instability of antiferromagnetic multilayersinfo: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/openAccessORIGINALSurfaceInducedLowFieldInstabilityOfAntiferromagneticMultilayers_1999_Carrico.pdfSurfaceInducedLowFieldInstabilityOfAntiferromagneticMultilayers_1999_Carrico.pdfapplication/pdf158833https://repositorio.ufrn.br/bitstream/123456789/28855/1/SurfaceInducedLowFieldInstabilityOfAntiferromagneticMultilayers_1999_Carrico.pdf198cf0249f9aece84aacef9acd44331bMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/28855/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52TEXTSurfaceInducedLowFieldInstabilityOfAntiferromagneticMultilayers_1999_Carrico.pdf.txtSurfaceInducedLowFieldInstabilityOfAntiferromagneticMultilayers_1999_Carrico.pdf.txtExtracted texttext/plain43155https://repositorio.ufrn.br/bitstream/123456789/28855/3/SurfaceInducedLowFieldInstabilityOfAntiferromagneticMultilayers_1999_Carrico.pdf.txt6b92d6791e5a56c84cd742b0ee0dceb0MD53THUMBNAILSurfaceInducedLowFieldInstabilityOfAntiferromagneticMultilayers_1999_Carrico.pdf.jpgSurfaceInducedLowFieldInstabilityOfAntiferromagneticMultilayers_1999_Carrico.pdf.jpgGenerated Thumbnailimage/jpeg1914https://repositorio.ufrn.br/bitstream/123456789/28855/4/SurfaceInducedLowFieldInstabilityOfAntiferromagneticMultilayers_1999_Carrico.pdf.jpg651541dcea6932ce468978ff14b1322bMD54123456789/288552020-05-05 01:32:36.568oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-05-05T04:32:36Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Surface-induced low-field instability of antiferromagnetic multilayers |
title |
Surface-induced low-field instability of antiferromagnetic multilayers |
spellingShingle |
Surface-induced low-field instability of antiferromagnetic multilayers Carriço, Artur da Silva Surface-induced Low-field Instability Antiferromagnetic multilayers |
title_short |
Surface-induced low-field instability of antiferromagnetic multilayers |
title_full |
Surface-induced low-field instability of antiferromagnetic multilayers |
title_fullStr |
Surface-induced low-field instability of antiferromagnetic multilayers |
title_full_unstemmed |
Surface-induced low-field instability of antiferromagnetic multilayers |
title_sort |
Surface-induced low-field instability of antiferromagnetic multilayers |
author |
Carriço, Artur da Silva |
author_facet |
Carriço, Artur da Silva Dantas, Ana Lucia |
author_role |
author |
author2 |
Dantas, Ana Lucia |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Carriço, Artur da Silva Dantas, Ana Lucia |
dc.subject.por.fl_str_mv |
Surface-induced Low-field Instability Antiferromagnetic multilayers |
topic |
Surface-induced Low-field Instability Antiferromagnetic multilayers |
description |
We discuss the surface-induced low-field instability of the antiferromagnetic phase of magnetic multilayers. The threshold field is calculated analytically for multilayers of arbitrary thickness containing an even number of layers. We show that the threshold is given by HSSF=5AHeHa1Ha 2 , where He and Ha are the effective exchange and anisotropy fields. The effective anisotropy field Ha may include both uniaxial and fourfold crystalline anisotropy. Numerical simulations of the equilibrium phases, based on a self-consistent effective field method, are used to obtain the magnetization pattern. We find that thick uniaxial multilayers display a three-stage transition from the antiferromagnetic to the field-aligned phases, whereas in thin multilayers the transition is from the antiferromagnetic to a nearly spin-flop structure, which gradually aligns with the applied field. If the films composing the multilayer have uniaxial and crystalline anisotropy, the magnetization profile in the multilayer and the nature of the transition depend on the relative values of the uniaxial and crystalline anisotropies. |
publishDate |
1999 |
dc.date.issued.fl_str_mv |
1999-01-01 |
dc.date.accessioned.fl_str_mv |
2020-04-29T23:25:26Z |
dc.date.available.fl_str_mv |
2020-04-29T23:25:26Z |
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 |
CARRIÇO, Artur da Silva; DANTAS, Ana Lucia. Surface-induced low-field instability of antiferromagnetic multilayers. Physical Review. B: Condensed Matter and Materials Physics), [s. l.], v. 59, n.2, p. 1223-1231, 1999. ISSN 2469-9969 versão online. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.59.1223. Acesso em: 29 abr. 2020. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/28855 |
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.59.1223 |
identifier_str_mv |
CARRIÇO, Artur da Silva; DANTAS, Ana Lucia. Surface-induced low-field instability of antiferromagnetic multilayers. Physical Review. B: Condensed Matter and Materials Physics), [s. l.], v. 59, n.2, p. 1223-1231, 1999. ISSN 2469-9969 versão online. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.59.1223. Acesso em: 29 abr. 2020. 2469-9969 (online), 2469-9950 (print). |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/28855 https://doi.org/10.1103/PhysRevB.59.1223 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
American Physical Society |
publisher.none.fl_str_mv |
American Physical Society |
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Repositório Institucional da UFRN |
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