Erase/restorable asymmetric magnetization reversal in polycrystalline ferromagnetic films

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dc.contributor.authorLi, S. P.
dc.contributor.authorKulkarni, Santosh
dc.contributor.authorRoy, Saibal
dc.date.accessioned2017-09-20T10:06:33Z
dc.date.available2017-09-20T10:06:33Z
dc.date.issued2012
dc.description.abstractAsymmetric hysteresis loops are generally found in exchange-coupled ferromagnetic/antiferromagnetic layers or composite. Once the film is deposited the magnetization reversal behaviour becomes certain due to the fixed anisotropy of the film. We report an asymmetric magnetization reversal, which is erase/restorable in polycrystalline soft magnetic film. When the film is pre-saturated at a high field in the induced uniaxial easy direction, the asymmetric hysteresis loops with one branch governed by "coherent rotation" and another branch with kink induced by mixed reversal mechanism of "coherent rotation" and "rotation/180 degrees-domain-wall-motion/rotation" are obtained. If the film is presaturated in the induced hard axis, the kink disappears and "normal" hysteresis behaviour is observed instead. Such asymmetric magnetization curve can be restored if the film is pre-saturated in the easy axis again. The observed phenomenon is originated from an embedded second magnetically hard phase which tunes the anisotropy in the film. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4765652]en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid103918
dc.identifier.citationLi, S. P., Kulkarni, S. and Roy, S. (2012) 'Erase/restorable asymmetric magnetization reversal in polycrystalline ferromagnetic films', Journal of Applied Physics, 112(10), 103918 (5pp). doi: 10.1063/1.4765652en
dc.identifier.doi10.1063/1.4765652
dc.identifier.endpage5
dc.identifier.issn0021-8979
dc.identifier.issn1089-7550
dc.identifier.issued10
dc.identifier.journaltitleJournal of Applied Physicsen
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/10468/4727
dc.identifier.volume112
dc.language.isoenen
dc.publisherAIP Publishingen
dc.relation.urihttp://aip.scitation.org/doi/10.1063/1.4765652
dc.rights© 2012, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Li, S. P., Kulkarni, S. and Roy, S. (2012) 'Erase/restorable asymmetric magnetization reversal in polycrystalline ferromagnetic films', Journal of Applied Physics, 112(10), 103918 (5pp). doi: 10.1063/1.4765652 and may be found at http://aip.scitation.org/doi/10.1063/1.4765652en
dc.subjectMagnetic hysteresisen
dc.subjectMagnetic filmsen
dc.subjectMagnetic anisotropyen
dc.subjectMagnetization reversalsen
dc.subjectThin filmsen
dc.titleErase/restorable asymmetric magnetization reversal in polycrystalline ferromagnetic filmsen
dc.typeArticle (peer-reviewed)en
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