Erase/restorable asymmetric magnetization reversal in polycrystalline ferromagnetic films

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dc.contributor.author Li, S. P.
dc.contributor.author Kulkarni, Santosh
dc.contributor.author Roy, Saibal
dc.date.accessioned 2017-09-20T10:06:33Z
dc.date.available 2017-09-20T10:06:33Z
dc.date.issued 2012
dc.identifier.citation 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 en
dc.identifier.volume 112
dc.identifier.issued 10
dc.identifier.startpage 1
dc.identifier.endpage 5
dc.identifier.issn 0021-8979
dc.identifier.issn 1089-7550
dc.identifier.uri http://hdl.handle.net/10468/4727
dc.identifier.doi 10.1063/1.4765652
dc.description.abstract Asymmetric 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.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher AIP Publishing en
dc.relation.uri http://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/10.1063/1.4765652 en
dc.subject Magnetic hysteresis en
dc.subject Magnetic films en
dc.subject Magnetic anisotropy en
dc.subject Magnetization reversals en
dc.subject Thin films en
dc.title Erase/restorable asymmetric magnetization reversal in polycrystalline ferromagnetic films en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Saibal Roy, Tyndall National Institute, University College Cork, Cork, Ireland +353-21-490-3000 Email: saibal.roy@tyndall.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Applied Physics en
dc.internal.IRISemailaddress saibal.roy@tyndall.ie en
dc.identifier.articleid 103918


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