Oxygen chemisorption on a stepped Ru (∼001) crystal

S. L. Parrott, G. Praline, B. E. Koel, J. M. White, T. N. Taylor

Research output: Contribution to journalArticle

45 Scopus citations

Abstract

The 300 K chemisorption of oxygen on a stepped Ru (∼001) single crystal [17(001)×(100)] gives 2×2 complete half-order, 1×2 complete or incomplete half-order, and 1×1 integral-order LEED patterns depending on oxygen exposure and sample annealing. The corresponding relative AES oxygen signals are 0.25, 0.50, and 1.0, respectively. Under certain surface conditions, the presence of the steps is seen to break the threefold degenerate growth habit of 1×2 domains. The 1×1 pattern forms at 300 K only after lengthy exposure at relatively high pressure (10-5 Torr) and is stable to 600 K. Prolonged exposure gives rise to relative AES oxygen signals greater than unity suggesting penetration into the subsurface region.

Original languageEnglish (US)
Pages (from-to)3352-3354
Number of pages3
JournalThe Journal of chemical physics
Volume71
Issue number8
DOIs
StatePublished - Jan 1 1979
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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    Parrott, S. L., Praline, G., Koel, B. E., White, J. M., & Taylor, T. N. (1979). Oxygen chemisorption on a stepped Ru (∼001) crystal. The Journal of chemical physics, 71(8), 3352-3354. https://doi.org/10.1063/1.438782