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dc.contributor.authorGeshev, Julian Penkovpt_BR
dc.date.accessioned2014-09-26T02:10:55Zpt_BR
dc.date.issued2000pt_BR
dc.identifier.issn1098-0121pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/103857pt_BR
dc.description.abstractAnalytical expressions have been derived for the exchange bias field, coercivity, and effective anisotropy field in ferromagnetic/antiferromagnetic bilayers in the framework of a model assuming the formation of a planar domain wall at the antiferromagnetic side of the interface with the reversal of the ferromagnetic orientation. It is shown that there are five different sets of analytical expressions for the hysteresis loop displacement and coercivity, which depend on the interfacial exchange coupling strength and ferromagnetic anisotropy, and only one expression for the effective anisotropy field. These expressions are compared with the previously reported theoretical results, and the validity of the latter is discussed. It is shown that in the framework of the present model, the hysteresis loop, ac susceptibility, and ferromagnetic resonance measurements of exchange anisotropy should give the same values for the exchange bias field. The difference between the exchange bias field values, estimated experimentally by ac susceptibility and through hysteresis loop measurements for Co/CoO bilayers, is explained as well.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. B, Condensed matter and materials physics. Woodbury. Vol. 62, no. 9 (Sept. 2000), p. 5627-5633pt_BR
dc.rightsOpen Accessen
dc.subjectMateriais antiferromagnéticospt_BR
dc.subjectForca coercivapt_BR
dc.subjectInterações de troca (elétron)pt_BR
dc.subjectMateriais ferromagnéticospt_BR
dc.subjectRessonancia ferromagneticapt_BR
dc.subjectAnisotropia magnéticapt_BR
dc.subjectParedes de domínios magnéticospt_BR
dc.subjectPolarização por intercâmbiopt_BR
dc.subjectHisterese magnéticapt_BR
dc.subjectSuscetibilidade magnéticapt_BR
dc.subjectFilmes finos magneticospt_BR
dc.titleAnalytical solutions for exchange bias and coercivity in ferromagnetic/antiferromagnetic bilayerspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000274852pt_BR
dc.type.originEstrangeiropt_BR


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