Initial growth and coverage determination 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

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Abstract

Auger electron spectroscopy and ultraviolet photoelectron spectroscopy were used to study the initial growth and alloy formation of Ni/Pt(1 1 1) ultrathin films. The coverage of Ni calculated by two different theoretical models is comparable to our experimental data. A Pt-rich phase was found on the surface layers by a depth profile after the formation of the Ni-Pt alloy. The UP spectra showed some interesting changes when the coverage of Ni increased and the formation of Ni-Pt alloy occurred. The evolution of the UP peak height can be used to determine the Ni coverage in the initial layer-by-layer growth.

Original languageEnglish
Pages (from-to)139-144
Number of pages6
JournalThin Solid Films
Volume425
Issue number1-2
DOIs
Publication statusPublished - 2003 Feb 3

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Keywords

  • Auger electron spectroscopy
  • Growth mechanism
  • Photoelectron spectroscopy
  • 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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