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dc.contributorVirginia Tech
dc.contributor.authorChou, Y. L.
dc.contributor.authorPleimling, M.
dc.date.accessioned2014-02-11T13:45:58Z
dc.date.available2014-02-11T13:45:58Z
dc.date.issued2011-10-17
dc.identifier.citationChou, Yen-Liang ; Pleimling, Michel, Oct 17, 2011. "Ising metamagnets in thin film geometry: Equilibrium properties," PHYSICAL REVIEW B 84(13): 134422. DOI: 10.1103/PhysRevB.84.134422
dc.identifier.issn1098-0121
dc.identifier.urihttp://hdl.handle.net/10919/25385
dc.description.abstractArtificial antiferromagnets and synthetic metamagnets have attracted much attention recently due to their potential for many different applications. Under some simplifying assumptions, these systems can be modeled by thin Ising metamagnetic films. In this paper we study, using both the Wang-Landau scheme and importance sampling Monte Carlo simulations, the equilibrium properties of these films. On the one hand, we discuss the microcanonical density of states and its prominent features. On the other hand, we analyze canonically various global and layer quantities. We obtain the phase diagram of thin Ising metamagnets as a function of temperature and external magnetic field. Whereas the phase diagram of the bulk system exhibits only one phase transition between the antiferromagnetic and paramagnetic phases, the phase diagram of thin Ising metamagnets includes an additional intermediate phase where one of the surface layers has aligned itself with the direction of the applied magnetic field. This additional phase transition is discontinuous and ends in a critical end point. Consequently, it is possible to gradually go from the antiferromagnetic phase to the intermediate phase without passing through a phase transition.
dc.description.sponsorshipUS National Science Foundation_DMR-0904999
dc.language.isoen_US
dc.publisherAmerican Physical Society
dc.subjectmonte-carlo
dc.subjecttricritical behavior
dc.subjectsmall systems
dc.subjectperpendicular
dc.subjectanisotropy
dc.subjectmagnetization reversal
dc.subjectdimensional crossover
dc.subjectphase-transitions
dc.subjecteffective-field
dc.subjectfebr2
dc.subjectmodel
dc.subjectPhysics
dc.titleIsing metamagnets in thin film geometry: Equilibrium properties
dc.typeArticle - Refereed
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevB.84.134422
dc.date.accessed2013-12-18
dc.title.serialPhysical Review B
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.84.134422


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