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

dc.contributor.authorRhen, Fernando M. F.
dc.contributor.authorRoy, Saibal
dc.contributor.funderScience Foundation Ireland
dc.contributor.funderEnterprise Ireland
dc.date.accessioned2017-07-12T09:07:44Z
dc.date.available2017-07-12T09:07:44Z
dc.date.issued2008-05-16
dc.description.abstractThe magnetic properties of electrodeposited CoNiFe films with thicknesses varying from 0.20 to 10 mu m 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 H(c)=H(c)(morph)+H(c)(anis). Good agreement between the model and the experimental results was obtained.en
dc.description.sponsorshipScience Foundation Ireland (Principal Investigator (06/IN.1/I98)); Enterprise Ireland (under PEIG Magnetics)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid103901
dc.identifier.citationRhen, F. M. F. and Roy, S. (2008) 'Dependence of magnetic properties on micro- to nanostructure of CoNiFe films', Journal of Applied Physics, 103(10), pp. 103901. doi: 10.1063/1.2919059en
dc.identifier.doi10.1063/1.2919059
dc.identifier.endpage4
dc.identifier.issn0021-8979
dc.identifier.issued10
dc.identifier.journaltitleJournal of Applied Physicsen
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/10468/4223
dc.identifier.volume103
dc.language.isoenen
dc.publisherAIP Publishingen
dc.relation.urihttp://aip.scitation.org/doi/abs/10.1063/1.2919059
dc.rights© 2008 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 Rhen, F. M. F. and Roy, S. (2008) 'Dependence of magnetic properties on micro- to nanostructure of CoNiFe films', Journal of Applied Physics, 103(10), pp. 103901 and may be found at http://aip.scitation.org/doi/abs/10.1063/1.2919059en
dc.subjectElectrochemical preparationen
dc.subjectSulfur inclusionen
dc.subjectFlux densityen
dc.subjectSoften
dc.subjectCoercivityen
dc.subjectResistivityen
dc.subjectThicknessen
dc.subjectSizeen
dc.subjectHeaden
dc.subjectCoercive forceen
dc.subjectThin filmsen
dc.subjectElectrodepositionen
dc.subjectThin film structureen
dc.subjectThin film depositionen
dc.titleDependence of magnetic properties on micro- to nanostructure of CoNiFe filmsen
dc.typeArticle (peer-reviewed)en
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