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

โœ Scribed by C Mocuta; A Barbier; G Renaud

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
422 KB
Volume
162-163
Category
Article
ISSN
0169-4332

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โœฆ Synopsis

We present a structural investigation of the polar 111 surface of CoO single crystals by grazing incidence X-ray diffraction.

The surface is found to be always covered by a ; 50 A-thick spinel Co O layer that was quantitatively 3 4 characterized. Attempts to remove this layer by UHV annealings or Ar q bombardments lead to the formation of metallic Co clusters on the surface that transform again in Co O by annealing under oxygen.

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## Abatrac-The surface of an electropolished Au(lO0) single crystal has been investigated by synchrotron X-ray diffraction. The crystal was examined after having swept the potential into the double layer of the oxide and hydrogen regions. The results show that there is very little change in the su