Structure determination of Pt3Ti(111) by automated tensor LEED

W. Chen, J. A.K. Paul*, A. Barbieri, M. A. VAN HOVE, S. Cameron, D. J. Dwyer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

An analysis of low-energy electron diffraction (LEED) I-V spectra from the clean Pt3Ti(111) surface was performed by comparing measured intensities with data calculated using an automated tensor LEED program, which employs a directed search optimization procedure. It was found that the topmost layer is pure Pt and that the other layers have the bulk composition. The first and second interlayer spacings are 2.23+or-0.03 AA and 2.21+or-0.03 AA respectively, corresponding to a contraction of 0.9% and 1.8% of the bulk value. The perpendicular buckling is 0.04 AA +or-0.05 AA in the top layer and 0.15 AA +or-0.04 AA in the second layer. The results are in full accordance with previous investigations of the physical and chemical properties of this surface.

Original languageEnglish
Article number003
Pages (from-to)4585-4594
Number of pages10
JournalJournal of Physics Condensed Matter
Volume5
Issue number27
DOIs
Publication statusPublished - 1993

Scopus Subject Areas

  • Materials Science(all)
  • Condensed Matter Physics

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