CoO(111) surface study by surface X-ray diffraction

Authors
Mocuta, C Barbier, A Renaud, G
Citation
C. Mocuta et al., CoO(111) surface study by surface X-ray diffraction, APPL SURF S, 162, 2000, pp. 56-61
Citations number
27
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
APPLIED SURFACE SCIENCE
ISSN journal
01694332 → ACNP
Volume
162
Year of publication
2000
Pages
56 - 61
Database
ISI
SICI code
0169-4332(200008)162:<56:CSSBSX>2.0.ZU;2-8
Abstract
We present a structural investigation of the polar (111) surface of CoO sin gle crystals by grazing incidence X-ray diffraction. The surface is found t o be always covered by a similar to 50 Angstrom-thick spinel Co3O4 layer th at was quantitatively characterized. Attempts to remove this layer by UHV a nnealings or Ar+ bombardments lead to the formation of metallic Co clusters on the surface that transform again in Co3O4 by annealing under oxygen. (C ) 2000 Elsevier Science B.V. All rights reserved.