Structural and electronic characterization of Co nanostructures on Au(332)

dc.creatorPrieto, MJ
dc.creatorCarbonio, EA
dc.creatorLanders, R
dc.creatorde Siervo, A
dc.date2013
dc.dateNOV
dc.date2014-08-01T18:29:25Z
dc.date2015-11-26T17:07:35Z
dc.date2014-08-01T18:29:25Z
dc.date2015-11-26T17:07:35Z
dc.date.accessioned2018-03-28T23:56:06Z
dc.date.available2018-03-28T23:56:06Z
dc.identifierSurface Science. Elsevier Science Bv, v. 617, n. 87, n. 93, 2013.
dc.identifier0039-6028
dc.identifier1879-2758
dc.identifierWOS:000326141100013
dc.identifier10.1016/j.susc.2013.07.025
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/79640
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/79640
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1280151
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCo nanoislands were grown on (332) vicinal surface of Au in UHV using the e-beam evaporation technique. Scanning tunneling microscopy results reveal that Co deposition occurs following an islanding mode for theta(Co) ranging from 0.17 to 0.64 ML At low coverage nanoislands show a monolayer height, while at higher Co loadings, islands have a maximum bilayer height. XPS measurements rule out the possibility of alloy formation provided that binding energy of Co2p core lines remains unchanged as cobalt loading increases. Also, XPS data reveals that, when subjected to thermal annealing, Co atoms diffuse into Au crystal retaining its chemical nature as before the annealing. Finally, NO adsorption experiments show that Co nanostructures are partially oxidized upon adsorption, as evidenced by changes in core photoemission lineshapes of the Co2p lines. Also, NO adsorption seems to inhibit Co atom diffusion into Au crystal during moderate thermal treatment (C) 2013 Elsevier B.V. All rights reserved.
dc.description617
dc.description87
dc.description93
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFAPESP [Proc. 2011/12.566-3]
dc.descriptionCNPq [Proc. 160172/2011-0]
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationSurface Science
dc.relationSurf. Sci.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectNanoislands
dc.subjectVicinal
dc.subjectCobalt
dc.subjectAdsorption
dc.subjectAu(111) Vicinal Surfaces
dc.subjectMetal-surfaces
dc.subjectCobalt Nanostructures
dc.subjectOrdered Growth
dc.subjectAlloys
dc.subjectNo
dc.titleStructural and electronic characterization of Co nanostructures on Au(332)
dc.typeArtículos de revistas


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