Kinetic study of the formation of a surface-confined Cu50Pt50 alloy

Authors
Tsay, JS Mangen, T Wandelt, K
Citation
Js. Tsay et al., Kinetic study of the formation of a surface-confined Cu50Pt50 alloy, THIN SOL FI, 397(1-2), 2001, pp. 152-156
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
THIN SOLID FILMS
ISSN journal
00406090 → ACNP
Volume
397
Issue
1-2
Year of publication
2001
Pages
152 - 156
Database
ISI
SICI code
0040-6090(20011001)397:1-2<152:KSOTFO>2.0.ZU;2-5
Abstract
Using Auger electron spectroscopy we demonstrate the determination of the e nergy barrier for the formation of a surface-confined Cu50Pt50(111) bilayer alloy. Starting with one monolayer of Cu on Pt(111) concentration changes are determined as a function of annealing temperature up to 600 K and annea ling time. Comparison of the experimental data with Monte Carlo simulations give the best result for the assumption of a Cu50Pt50 surface alloy yieldi ng an energy barrier for interlayer mixing of 1.11 +/- 0.12 eV/atom. Concom itant valence band photoemission spectra also indicate the alloy formation. (C) 2001 Elsevier Science B.V. All rights reserved.