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

Jyh-Shen Tsay, T. Mangen, K. Wandelt

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Using Auger electron spectroscopy we demonstrate the determination of the energy 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 annealing time. Comparison of the experimental data with Monte Carlo simulations give the best result for the assumption of a Cu50Pt50 surface alloy yielding an energy barrier for interlayer mixing of 1.11±0.12 eV/atom. Concomitant valence band photoemission spectra also indicate the alloy formation.

Original languageEnglish
Pages (from-to)152-156
Number of pages5
JournalThin Solid Films
Volume397
Issue number1-2
DOIs
Publication statusPublished - 2001 Nov 1

Keywords

  • Alloys
  • Auger electron spectroscopy
  • Copper
  • Diffusion
  • Platinum
  • Surface segregation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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