Morphological stabilization and KPZ scaling by electrochemically induced co-deposition of nanostructured NiW alloy films

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Show simple item record Orrillo, P. A. Santalla, Silvia N. Cuerno, Rodolfo Vázquez, L. Ribotta, S. B. Gassa, L. M. Mompean, F. J. Salvarezza, R. C. Vela, M. E. 2019-05-16T08:10:47Z 2019-05-16T08:10:47Z 2017-12-21
dc.identifier.bibliographicCitation Orillo, P.A., Santalla, S.N., Cuerno, R., Vázquez, L., Ribotta, S.B., Gassa, L.M., Mompean, F.J., Salvarezza, R.C. y Vela, M.E. (2017). Morphological stabilization and KPZ scaling by electrochemically induced codeposition of nanostructured NiW alloy films. Scientific Report, 7, 17997
dc.identifier.issn 2045-2322
dc.description.abstract We have assessed the stabilizing role that induced co-deposition has in the growth of nanostructured NiW alloy films by electrodeposition on polished steel substrates, under pulsed galvanostatic conditions. We have compared the kinetic roughening properties of NiW films with those of Ni films deposited under the same conditions, as assessed by Atomic Force Microscopy. The surface morphologies of both systems are super-rough at short times, but differ at long times: while a cauliflower-like structure dominates for Ni, the surfaces of NiW films display a nodular morphology consistent with more stable, conformal growth, whose height fluctuations are in the Kardar-ParisiZhang universality class of rough two-dimensional interfaces. These differences are explained by the mechanisms controlling surface growth in each case: mass transport through the electrolyte (Ni) and attachment of the incoming species to the growing interface (NiW). Thus, the long-time conformal growth regime is characteristic of electrochemical induced co-deposition under current conditions in which surface kinetics is hindered due to a complex reaction mechanism. These results agree with a theoretical model of surface growth in diffusion-limited systems, in which the key parameter is the relative importance of mass transport with respect to the kinetics of the attachment reaction.
dc.description.sponsorship We acknowledge financial support from ANPCyT (PICT 2012-1808), CONICET (PIP 0671) and Universidad Nacional de La Plata (11X760) as well as from MINECO/FEDER (Spain/UE) Grants MAT2014-54231-C4-1-P, FIS2015-66020-C2-1-P and MAT2014-52405-C2-2-R, as well as by Comunidad Autónoma de Madrid (Spain) Grant NANOAVANSENS S2013/MIT-3029. M.E.V. is member of the research career of CICPBA
dc.format.extent 13
dc.language.iso eng
dc.publisher Scientific Reports
dc.rights © 2017 The Author(s).
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.title Morphological stabilization and KPZ scaling by electrochemically induced co-deposition of nanostructured NiW alloy films
dc.type article
dc.subject.eciencia Matemáticas
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. MAT2014-54231-C4-1-P
dc.relation.projectID Gobierno de España. FIS2015-66020-C2-1-P
dc.relation.projectID Gobierno de España. MAT2014-52405-C2-2-R
dc.relation.projectID Comunidad de Madrid. S2013/MIT-3029
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue (17997)
dc.identifier.publicationlastpage 12
dc.identifier.publicationtitle Scientific Reports
dc.identifier.publicationvolume 7
dc.identifier.uxxi AR/0000020885
dc.contributor.funder Consejería de Educación, Juventud y Deporte, Comunidad de Madrid
dc.contributor.funder Ministerio de Economía y Competitividad (España)
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