Comparison of surface spin wave modes at Fe/MnF2 and Fe/Mn interfaces

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dc.contributor.authorSiu, I. L.
dc.contributor.authorIslam, M. N.
dc.contributor.authorWalker, J. C.
dc.date.accessioned2016-02-25T21:51:41Z
dc.date.available2016-02-25T21:51:41Z
dc.date.issued2000-11-01
dc.description.abstractWe have studied the thermal demagnetization in semi-infinite ferromagnets in Fe/MnF2 and Fe/Mn bilayers using Mössbauer spectroscopy. We find that the hyperfine field at the Fe/MnF2 interface follows a quasilinear temperature dependence, which reverts to a T3/2 dependence further into the bulk. The region in which linear temperature dependence was observed also showed significantly higher spin canting than in the film's bulk layers. The interface in the Fe/Mn system immediately showed a T3/2 dependence which persisted deeper into the bulk. We attribute the linear temperature behavior to surface spin wave modes created by a perpendicular surface anisotropy at the interface. This behavior diminishes farther away from the interface, until the hyperfine field goes like T3/2 as expected for bulk, 3D spin waves. We conclude that the perpendicular surface anisotropy is much stronger at the Fe/MnF2 than the Fe/Mn interface.en_US
dc.identifier.citationJournal of Applied Physics 1 Nov. 2000, vol.88, no.9, pp. 5293-5en_US
dc.identifier.urihttp://jhir.library.jhu.edu/handle/1774.2/38269
dc.language.isoen_USen_US
dc.publisherAmerican Institute of Physicsen_US
dc.subjectsurface spin wave modesen_US
dc.subjectthermal demagnetizationen_US
dc.subjectsemi-infinite ferromagnetsen_US
dc.subjectFe/MnF2 bilayersen_US
dc.subjectFe/Mn bilayersen_US
dc.subjectmanganese compoundsen_US
dc.subjectmagnetic multilayersen_US
dc.subjectironen_US
dc.subjecthyperfine interactionsen_US
dc.subjectferromagnetic materialsen_US
dc.subjectMossbauer spectraen_US
dc.subjectinterface hyperfine fielden_US
dc.subjecttemperature dependenceen_US
dc.subjectspin cantingen_US
dc.subjectperpendicular surface anisotropyen_US
dc.subjectFe-Mnen_US
dc.subjectFe-MnF2en_US
dc.titleComparison of surface spin wave modes at Fe/MnF2 and Fe/Mn interfacesen_US
dc.typeArticleen_US
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