MORPHOLOGY OF MGO(111) SURFACES - ARTIFACTS ASSOCIATED WITH THE FACETING OF POLAR OXIDE SURFACES INTO NEUTRAL SURFACES

Citation
R. Plass et al., MORPHOLOGY OF MGO(111) SURFACES - ARTIFACTS ASSOCIATED WITH THE FACETING OF POLAR OXIDE SURFACES INTO NEUTRAL SURFACES, Surface science, 414(1-2), 1998, pp. 26-37
Citations number
17
Categorie Soggetti
Chemistry Physical
Journal title
ISSN journal
00396028
Volume
414
Issue
1-2
Year of publication
1998
Pages
26 - 37
Database
ISI
SICI code
0039-6028(1998)414:1-2<26:MOMS-A>2.0.ZU;2-Y
Abstract
It is shown by optical, atomic force, scanning and transmission electr on microscopies that the MgO(111) surface does not Facet into neutral( 100) type planes upon annealing. The triangular pyramidal pits that He nrich [V.E. Henrich Surf. Sci., 57 (1976) 385] associates with the pol ar (111) surface faceting into (100) planes turn out to be artifacts o f the acid etch used in the sample preparation process. It is shown th at the pyramidal pits have facets sloped at 10.8+/-2.8 degrees with re spect to the (111) surface, corresponding to sets of vicinal surfaces. The pit edges are confirmed by transmission electron microscopy to be along the three equivalent [110]-type directions. (C) 1998 Elsevier S cience B.V. All rights reserved.