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Dependence of magnetic properties on micro- to nanostructure of CoNiFe films

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dc.contributor.author Rhen, Fernando M.F.
dc.contributor.author Roy, Saibal
dc.date.accessioned 2011-08-09T11:54:49Z
dc.date.available 2011-08-09T11:54:49Z
dc.date.issued 2008
dc.identifier.uri http://hdl.handle.net/10344/1202
dc.description peer-reviewed en_US
dc.description.abstract The magnetic properties of electrodeposited CoNiFe films with thicknesses varying from 0.20 to 10 µm were studied. The films show a single face-centered-cubic CoNiFe phase with grain sizes ranging from 23 to 29 nm. The coercivity is controlled by a combination of the morphology and nanocrystalline structure of the deposits. The nanocrystalline grain size determines the intrinsic coercivity associated with crystalline anisotropy as in the random anisotropy model, whereas an additional morphology term of coercivity is controlled by the thickness inhomogeneity on a submicron scale. The thin films show considerable roughness and a higher coercivity, up to a level of 560 A m−1 (7.0 Oe) in 250 nm films. The thick films show coercivity values of as low as 16 A m−1 (0.2 Oe). The coercivity dependence on thickness was fitted using a simple model combining a morphology dependent additional contribution term to the random anisotropy model as Hc=Hc[morph]+Hc[anis]. Good agreement between the model and the experimental results was obtained. en_US
dc.description.sponsorship SFI 06/IN.1/I98 en_US
dc.description.sponsorship EI
dc.language.iso eng en_US
dc.publisher American Institute of Physics en_US
dc.relation.ispartofseries Journal of Applied Physics;103/ pp. 103901-4
dc.relation.uri http://dx.doi.org/10.1063/1.2919059
dc.subject magnetics en_US
dc.title Dependence of magnetic properties on micro- to nanostructure of CoNiFe films en_US
dc.type Article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.type.restriction none en
dc.contributor.sponsor SFI
dc.relation.projectid 06/IN.1/I98


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