Anomalous behavior of LEED beam intensity during annealing

Tsu Yi Fu, T. F. Liu, C. W. Su, C. S. Shern, R. H. Chen

Research output: Contribution to journalArticle

Abstract

Low-energy electron diffraction was used to study the annealing effects of 1 ML Ag on the ultra-thin-film Co/Pt (111). The behavior of the specular beam intensity versus temperature is anomalous. Besides the normal Debye-Waller effect, a bend occurs at 550 K, and a dramatic increase occurs at a higher temperature. A corresponding study by Auger electron spectroscopy and ultraviolet photoelectron spectroscopy indicates that the bend results from the Co inter-diffusion. The anomalous increase indicates that a more stable state forms at a higher temperature. The Co coverage plays an important role in determining the turning temperature. Possible mechanisms are discussed.

Original languageEnglish
Pages (from-to)211-216
Number of pages6
JournalSurface Science
Volume464
Issue number2-3
DOIs
Publication statusPublished - 2000 Oct 1

    Fingerprint

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this