Calculation of surface self-diffusion coefficients from AES data on decay of thin metal films

I. Beszeda, D. L. Beke, E. G. Gontier-Moya, Yu S. Kaganovskii, D. Ianetz

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We propose a simple method for calculation of surface self-diffusion coefficients using kinetic data on the decay of thin films - void growth and transformation of the island shape to the equilibrium. Calculations are made taking into account equilibrium wetting angle of the film on a substrate. The kinetic data on the decay of Pd thin films on sapphire and silica substrates were obtained using Auger electron spectroscopy. By in situ monitoring the intensity of the Auger signal from the film, three different stages of the decay could be distinguished. The surface self-diffusion coefficients were calculated for the temperature range 583 - 823 K. The values of the surface diffusion coefficients and the activation energies are discussed compared to those obtained by other methods.

Original languageEnglish
Pages (from-to)727-732
Number of pages6
JournalDefect and Diffusion Forum
Volume237-240
Issue numberPART 2
DOIs
Publication statusPublished - Jan 1 2005

Keywords

  • Auger electron spectroscopy
  • Palladium
  • Sapphire
  • Surface self-diffusion
  • Thin films

ASJC Scopus subject areas

  • Radiation
  • Materials Science(all)
  • Condensed Matter Physics

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