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Influence of the substrate on structure and magnetic properties of Co-N thin films

2015-06-05Journal article Restricted access
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dc.contributor.authorSilva, C.
dc.contributor.authorVovk, A.
dc.contributor.authorSilva, R.C. da
dc.contributor.authorStrichonavec, P.
dc.contributor.authorAlgarabel, P.A.
dc.contributor.authorCasaca, A.
dc.contributor.authorMeneghini, C.
dc.contributor.authorCarlomagno, I.
dc.contributor.authorGodinho, M.
dc.contributor.authorCruz, M.M.
dc.date.accessioned2016-03-17T16:27:47Z
dc.date.available2016-03-17T16:27:47Z
dc.date.issued2015-06-05
dc.description.abstractCubic cobalt nitride films were grown onto different single crystalline substrates Al2O3 (0 0 0 1) and (1 1 View the MathML source 0), MgO (1 0 0) and (1 1 0) and TiO2 (1 0 0) and (1 1 0). The films display low atomic densities compared with the bulk material, are ferromagnetic and have metallic electrical conductivity. X-ray diffraction and X-ray absorption fine structure confirm the cubic structure of the films and with RBS results indicate that samples are not homogeneous at the microscopic scale, coexisting Co4+xN nitride with nitrogen rich regions. The magnetization of the films decreases with increase of the nitrogen content, variation that is shown to be due to the decrease of the cobalt density, and not to a decrease of the magnetic moment per cobalt ion. The films are crystalline with a nitrogen deficient stoichiometry and epitaxial with orientation determined by the substrate.pt_PT
dc.identifier.citationSILVA, C.; [et al.] - Influence of the substrate on structure and magnetic properties of Co-N thin films. Journal of Alloys and Compounds. ISSN. 0925-8388. Vol. 633 (2015), pp. 470-478pt_PT
dc.identifier.doi10.1016/j.jallcom.2015.02.013pt_PT
dc.identifier.issn0925-8388
dc.identifier.issn1873-4669
dc.identifier.urihttp://hdl.handle.net/10400.21/5900
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherELSEVIER SCIENCE SApt_PT
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0925838815004302pt_PT
dc.subjectMagnetic nitridept_PT
dc.subjectCo4Npt_PT
dc.subjectReactive sputteringpt_PT
dc.subjectMagnetic filmspt_PT
dc.subjectSubstrate influencept_PT
dc.titleInfluence of the substrate on structure and magnetic properties of Co-N thin filmspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage478pt_PT
oaire.citation.startPage470pt_PT
oaire.citation.volume633pt_PT
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT

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