Growth mode and inter-diffusion of Co on Pt(111)

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Abstract

Low-energy electron diffraction (LEED) and Auger electron spectroscopy (AES) were used to study the initial growth of a cobalt ultrathin film on a Pt(111) surface. The growth of the cobalt ultrathin film on Pt(111) belongs to Stranski-Krastanov mode. The kinetics of the inter-diffusion of Co adatoms on a Pt(111) surface was studied by AES at various temperatures with the Co coverage of one monolayer. The activation energy and the pre-exponential diffusion coefficient are obtained to be 0.90 eV and 6.6 × 10-11 cm2/s respectively from an Arrhenius plot. Ultraviolet photoelectron spectroscopy (UPS) was used to monitor the alloy formation of Co/Pt(111) in the annealing process.

Original languageEnglish
Pages (from-to)610-616
Number of pages7
JournalChinese Journal of Physics
Volume35
Issue number5
Publication statusPublished - 1997 Dec 1

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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