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Title Identification of reconstruction in Pt films deposited on Pd(110) at room temperature
Creator/Author Schmitz, P.J. ; Leung, W. ; Kang, H.C. ; Thiel, P.A. (Department of Chemistry and Ames Laboratory, Iowa State University, Ames, Iowa 50011 (United States))
Publication Date1991 Dec 15
OSTI IdentifierOSTI ID: 5654914
DOE Contract NumberW-7405-ENG-82
Other Number(s)ISSN0163-1829; CODEN: PRBMD
Resource TypeJournal Article
Resource RelationPhysical Review, B: Condensed Matter ; Vol/Issue: 44:24; DOE Project
Subject360102 -- Metals & Alloys-- Structure & Phase Studies ;360101 -- Metals & Alloys-- Preparation & Fabrication; CARBON MONOXIDE-- ADSORPTION;PALLADIUM-- VACUUM COATING;PLATINUM-- DEPOSITION; AMBIENT TEMPERATURE;ANNEALING;AUGER EFFECT;ELECTRON DIFFRACTION;EPITAXY;THIN FILMS
Related SubjectCARBON COMPOUNDS;CARBON OXIDES;CHALCOGENIDES;COHERENT SCATTERING;DEPOSITION;DIFFRACTION;ELEMENTS;FILMS;HEAT TREATMENTS;METALS;OXIDES;OXYGEN COMPOUNDS;PLATINUM METALS;SCATTERING;SORPTION;SURFACE COATING;TRANSITION ELEMENTS
Description/Abstract We have studied the properties of Pt films on Pd(110), grown by deposition at 300 K and annealed up to 900 K, using low-energy electron diffraction and Auger-electron spectroscopy.^We observe (1{times}2) and (1{times}3) superstructures, depending upon Pt coverage and annealing temperature.^At one monolayer, the (1{times}1) periodicity is unperturbed.^Between one and three monolayers, a broad and streaky (1{times}2) develops upon annealing, then fades to (1{times}1) as the film dissolves.^At three monolayers and above, the broad and streaky (1{times}2) splits to a (1{times}3), then fades again to (1{times}1) at high temperature.^Adsorption of CO causes (1{times}3){r arrow}(1{times}1) reversion at relatively low temperature, 430 K. Based upon the known behavior of Pt(110) reconstructions, this is strong evidence that the (1{times}3) structure of the Pt film is a surface reconstruction.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 13734-13739
System Entry Date2001 May 13

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