Structure evolution of Ni ultrathin films on Pt(1 1 1)

C. W. Su, H. Y. Ho, C. S. Shern, R. H. Chen

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Low-energy electron diffraction and Auger electron spectroscopy were used to study the initial growth and the alloy formation of Ni ultrathin films on Pt(1 1 1) surface. Several interesting structural phases were observed in this system: pseudo-(1 × 1), (√3 × √3)R30°, coherent epitaxy, incoherent epitaxy, and (2 × 2). The phase diagram was determined by LEED. In addition, the formation of Ni-Pt alloy was investigated at various Ni coverages. The starting temperature for the alloy formation increases significantly as the Ni thin films turn into three-dimensional islands.

Original languageEnglish
Pages (from-to)103-108
Number of pages6
JournalSurface Science
Volume499
Issue number2-3
DOIs
Publication statusPublished - 2002 Mar 1

Keywords

  • Alloys
  • Auger electron spectroscopy
  • Epitaxy
  • Low energy electron diffraction (LEED)
  • Metallic films
  • Nickel
  • Platinum
  • Surface structure, morphology, roughness, and topography

ASJC Scopus subject areas

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

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