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

Authors
Journal
Surface Science
0039-6028
Publisher
Elsevier
Publication Date
Volume
248
Identifiers
DOI: 10.1016/0039-6028(91)90054-v

Abstract

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.

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