A (√3 × √3)R30° reconstruction on annealed (111) surfaces of MgO

M. Gajdardziska-Josifovska, Peter Crozier, J. M. Cowley

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Abstract

We have performed non-UHV studies on the (111) surface of MgO subjected to high temperature annealing (1550-1700°C) in an oxygen rich atmosphere. Reflection electron microscopy shows that the surface is atomically smooth over extended regions and exhibits a (√3 × √3)R30° reconstruction. Superlattice spots were observed in the RHEED patterns after two months exposure to air indicating that meaningful results can be obtained on this system under non-UHV conditions. Surface sensitive REELS indicates that the structure is mainly composed of oxygen.

Original languageEnglish (US)
Pages (from-to)L259-L264
JournalSurface Science
Volume248
Issue number1-2
DOIs
StatePublished - May 3 1991

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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