Structural Determination of the Unreconstructed and the Reconstructed (110) Surfaces of Iridium

C. M. Chan*, K. L. Luke, M. A. VAN HOVE, W. H. Weinberg, E. D. Williams

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

An Ir(110)-(1 multiplied by 1) surface has been prepared by adsorbing 1/4 monolayer of oxygen at 850 K on a clean, reconstructed (1 multiplied by 2) surface. Good agreement was achieved between theoretical and experimental intensity-voltage (I-V) spectra for a surface model in which the oxygen is randomly and uniformly distributed over the cyrstal surface, and the (1 multiplied by 1) structure is the same as for a clean unreconstructed (1 multiplied by 1) surface with a topmost interlayer spacing of 1. 26+360. 05 A. Three different models have been tested for the reconstructed Ir(110)-(1 multiplied by 2) surface, namely, the missing-row model, the paired rows model, and the buckled surface model. Based on the comparison between experimental data (consisting of ten half-order beams and eight integral-order beams) and the theoretical calculations, the mising-row model with a topmost interlayer spacing of 1. 22+360. 07 A is the most satisfactory model tested.

Original languageEnglish
Pages (from-to)642-645
Number of pages4
JournalJournal of Vacuum Science and Technology
Volume16
Issue number2
DOIs
Publication statusPublished - 1979

Scopus Subject Areas

  • Engineering(all)

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