dc.contributorAlmeida, Nilson Sena de
dc.contributor
dc.contributorhttp://lattes.cnpq.br/2080495135202168
dc.contributor
dc.contributorhttp://lattes.cnpq.br/7368118414083905
dc.contributorFarias, Gil Aquino de
dc.contributor
dc.contributorhttp://lattes.cnpq.br/5887613029010941
dc.contributorSoares, João Maria
dc.contributor
dc.contributorhttp://lattes.cnpq.br/2108722656012583
dc.contributorCarriço, Artur da Silva
dc.contributor
dc.contributorhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787041Z8
dc.contributorBezerra, Claudionor Gomes
dc.contributor
dc.contributorhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780822H8
dc.creatorMonteiro, Mário Antonio Alves
dc.date.accessioned2009-03-10
dc.date.accessioned2014-12-17T15:14:47Z
dc.date.accessioned2022-10-05T23:04:11Z
dc.date.available2009-03-10
dc.date.available2014-12-17T15:14:47Z
dc.date.available2022-10-05T23:04:11Z
dc.date.created2009-03-10
dc.date.created2014-12-17T15:14:47Z
dc.date.issued2008-12-05
dc.identifierMONTEIRO, Mário Antonio Alves. Efeitos de interface em bicamadas magnéticas acopladas. 2008. 189 f. Tese (Doutorado em Física da Matéria Condensada; Astrofísica e Cosmologia; Física da Ionosfera) - Universidade Federal do Rio Grande do Norte, Natal, 2008.
dc.identifierhttps://repositorio.ufrn.br/jspui/handle/123456789/16537
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3945986
dc.description.abstractWe have developed a theoretical study of magnetic bilayers composed by a ferromagnetic film grown in direct contact on an antiferromagnetic one. We have investigated the interface effects in this systems due to the interfilms coupling. We describe the interface effects by a Heisenberg like coupling with an additional unidirectional anisotropy. In the first approach we assume that the magnetic layers are thick enough to be described by the bulk parameters and they are coupled through the interaction between the magnetic moments located at the interface. We use this approach to calculate the modified dynamical response of each material. We use the magnetic permeability of the layers (with corrections introduced by interface interactions) to obtain a correlation between the interface characteristics and the physical behavior of the magnetic excitations propagating in the system. In the second model, we calculated an effective susceptibility of the system considering a nearly microscopical approach. The dynamic response obtained by this approach was used to study the modifications in the spectrum of the polaritons and its consequences on the attenuated total reflection (ATR). In addition, we have calculated the oblique reflectivity. We compare our result with those obtained for the dispersion relation of the magnetostatic modes in these systems
dc.publisherUniversidade Federal do Rio Grande do Norte
dc.publisherBR
dc.publisherUFRN
dc.publisherPrograma de Pós-Graduação em Física
dc.publisherFísica da Matéria Condensada; Astrofísica e Cosmologia; Física da Ionosfera
dc.rightsAcesso Aberto
dc.subjectEfeitos de interface
dc.subjectBicamadas magnéticas
dc.subjectModos magnetostáticos
dc.subjectPoláritons
dc.subjectRefletividade
dc.subjectInterface effects
dc.subjectMagnetic bilayers
dc.subjectMagnetostatic modes
dc.subjectPolaritons
dc.subjectReflectivity
dc.titleEfeitos de interface em bicamadas magnéticas acopladas
dc.typedoctoralThesis


Este ítem pertenece a la siguiente institución