Exchange bias model for Fe/FeF<sub>2</sub>

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dc.contributor.authorKiwi, M
dc.contributor.authorMejía-López, J
dc.contributor.authorPortugal, RD
dc.contributor.authorRamírez, R
dc.date.accessioned2025-01-21T01:31:44Z
dc.date.available2025-01-21T01:31:44Z
dc.date.issued1999
dc.description.abstractExchange bias (EB) is a shift of the hysteresis loop from its normal position, symmetric around H = 0, to HE not equal 0. It occurs when thin ferromagnetic (F) films are deposited on a variety of antiferromagnetic (AF) materials. EB is also associated with several additional remarkable features: i) the bulk magnetizations of the F is orthogonal to the AF easy axis; ii) H-E is of similar magnitude for compensated and uncompensated AF interface layers; iii) the sign of H-E can assume both positive and negative values; and, iv) the magnetization \M(H << -H-c)\ not equal \M(H >> +H-c)\ where H-c is the coercive field. Here we propose a model that describes the EB phenomenon for a compensated interface. Based on the experimental evidence, and extensive computer simulations, we suggest that close to the Neel temperature a canted spin configuration in the AF interface freezes into a metastable state. As a consequence, the EB energy is reversibly stored in a spring-like magnet, or incomplete domain wall (IDW), in the F slab. The results we extract from our model, both analytically and through simulations, are qualitatively and quantitatively compatible with the available experimental information.
dc.fuente.origenWOS
dc.identifier.issn0295-5075
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97130
dc.identifier.wosidWOS:000083940100017
dc.issue.numero5
dc.language.isoen
dc.pagina.final579
dc.pagina.inicio573
dc.revistaEurophysics letters
dc.rightsacceso restringido
dc.subject.ods09 Industry, innovation and infrastructure
dc.subject.odspa09 Industria, innovación e infraestructura
dc.titleExchange bias model for Fe/FeF<sub>2</sub>
dc.typeartículo
dc.volumen48
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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