The surface reconstructions of the (100) crystal faces of iridium, platinum and gold. I. Experimental observations and possible structural models

M. A. Van Hove, R. J. Koestner, Peter C Stair, J. P. Bibérian, L. L. Kesmodel, I. BartoŠ, G. A. Somorjai

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The structures of the reconstructed Ir(100), Pt(100) and Au(100) surfaces have been investigated. Low energy electron diffraction (LEED) patterns are analyzed and LEED intensity versus energy data are measured. A variety of structures is observed by LEED: Ir(100) exhibits a relatively simple (1 × 5) pattern; Pt(100) shows a series of closely related patterns, a typical representative of which has a ( 14 1 -1 5) structure; Au(100) usually exhibits a c(26 × 68) pattern, often inaccurately described in the literature as a (20 × 5) pattern. The reconstruction of Au(111) is also considered for comparison. Various plausible structural models are discussed, while laser simulation is used to lessen the number of these models. The analysis is completed in a companion paper where LEED intensity calculations are reported to determine the atomic locations.

Original languageEnglish
Pages (from-to)189-217
Number of pages29
JournalSurface Science
Issue number1
Publication statusPublished - Feb 1 1981


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

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