Ordered Oxide Surfaces On Metals: Chromium Oxide

dc.creatorPancotti A.
dc.creatorDe Siervo A.
dc.creatorCarazzolle M.F.
dc.creatorLanders R.
dc.creatorKleiman G.G.
dc.date2011
dc.date2015-06-30T20:42:18Z
dc.date2015-11-26T14:53:51Z
dc.date2015-06-30T20:42:18Z
dc.date2015-11-26T14:53:51Z
dc.date.accessioned2018-03-28T22:05:43Z
dc.date.available2018-03-28T22:05:43Z
dc.identifier
dc.identifierTopics In Catalysis. , v. 54, n. 01/04/15, p. 90 - 96, 2011.
dc.identifier10225528
dc.identifier10.1007/s11244-011-9628-7
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-79951951522&partnerID=40&md5=97ddc78407ee28cb907748e8e3d50937
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/108948
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/108948
dc.identifier2-s2.0-79951951522
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1255024
dc.descriptionWe present X-ray photoelectron spectroscopy (XPS) and X-ray photoelectron diffraction (XPD) investigations of ordered chromium oxide ultrathin films prepared on a Pd(111) single-crystal surface. The films where grown by thermal evaporation of Cr under an oxygen atmosphere and sample temperature of 600 K. The ordered films produced are strongly dependent on the film thickness and annealing treatment. Films with thickness below 5 Å, produced at low coverages, display a p(2 × 2) structure relative to Pd(111). Thicker films (thickness > 10 Å) always have a (√3 × √3)R30° structure. The photoemission measurements were done using conventional X-ray sources as well as synchrotron radiation taken at the Laboratório Nacional de Luz Síncrotron. The XPD data were interpreted through the use of a multiple scattering calculation approach combined with a genetic algorithm for surface structure optimization. Combining the information from XPS, low energy electron diffraction and XPD measurements we have determined the surface structure of the (√3 × √3)R30° phase. Elsewhere, we report on the structure of the p(2 × 2) phase. © 2011 Springer Science+Business Media, LLC 2011.
dc.description54
dc.description01/04/15
dc.description90
dc.description96
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dc.languageen
dc.publisher
dc.relationTopics in Catalysis
dc.rightsfechado
dc.sourceScopus
dc.titleOrdered Oxide Surfaces On Metals: Chromium Oxide
dc.typeActas de congresos


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