Topographic anisotropy in continuous magnetic films with two-dimensional surface nanomodulation

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dc.contributor.author Li, S. P.
dc.contributor.author Godsell, Jeffrey F.
dc.contributor.author Roy, Saibal
dc.date.accessioned 2017-09-20T10:06:35Z
dc.date.available 2017-09-20T10:06:35Z
dc.date.issued 2010
dc.identifier.citation Li, S. P., Godsell, J. F. and Roy, S. (2010) 'Topographic anisotropy in continuous magnetic films with two-dimensional surface nanomodulation', Journal of Applied Physics, 108(9), 093915 (5pp). doi: 10.1063/1.3501111 en
dc.identifier.volume 108
dc.identifier.issued 9
dc.identifier.startpage 1
dc.identifier.endpage 5
dc.identifier.issn 0021-8979
dc.identifier.uri http://hdl.handle.net/10468/4743
dc.identifier.doi 10.1063/1.3501111
dc.description.abstract Artificial and local control of spin-configuration in nanoscale in continuous magnetic films could enable new spin-based electronics and precision sensor technologies. Extensive theoretical research has recently been devoted to examination of surface nanovariation mediated magnetism and its utility, which has been demonstrated only in one-dimensional surface modulation. However, a realization of engineered spin configuration using two-dimensional (2D) nanomodulation is limited by local vortex formation induced by magnetostatic energy. In this work we demonstrate for the first time, an ability to control the anisotropy in continuous magnetic films by periodic surface nanomodulation in two-dimensions (2D). Magnetic properties of NiFe films with nanomodulated surfaces have been studied as a function of both film thickness and modulation amplitude. For films with a patterned square array (without breaking the film continuity), a clear fourfold symmetry of anisotropy field and coercivity was observed with rotation angle. An experimental phase diagram of anisotropy with respect to film thickness and modulation amplitude has been produced which delineates that the observed fourfold anisotropy is induced by the magnetostatic effect. The observed dependence of anisotropy field on film thickness and surface modulation amplitude agrees well with the developed theory. (C) 2010 American Institute of Physics. [doi:10.1063/1.3501111] 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/10.1063/1.3501111
dc.rights © 2010, 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., Godsell, J. F. and Roy, S. (2010) 'Topographic anisotropy in continuous magnetic films with two-dimensional surface nanomodulation', Journal of Applied Physics, 108(9), 093915 (5pp). doi: 10.1063/1.3501111 and may be found at http://aip.scitation.org/doi/10.1063/1.3501111 en
dc.subject Magnetic films en
dc.subject Magnetic anisotropy en
dc.subject Anisotropy en
dc.subject Coercive force en
dc.subject Thin film structure en
dc.title Topographic anisotropy in continuous magnetic films with two-dimensional surface nanomodulation 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.contributor.funder Science Foundation Ireland
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 93915
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Principal Investigator Programme (PI)/06/IN.1/I98/IE/Development of novel nano-composite high-frequency magnetic materials for future microprocessor power delivery/


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