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

被引：35

作者：

Mocuta, C ^{[1
]}

Barbier, A ^{[1
]}

Renaud, G ^{[1
]}

机构：

[1] CEA Grenoble, Dept Rech Fondamentale Matiere Condensee, SP2M, IRS, F-38054 Grenoble, France

来源：

APPLIED SURFACE SCIENCE | 2000年 / 162卷

关键词：

cobalt oxide; single crystals; grazing incidence X-ray diffraction; polar surface; Auger electron spectroscopy; crystallographic structure;

D O I：

10.1016/S0169-4332(00)00170-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 similar to 50 Angstrom-thick spinel Co3O4 layer that was quantitatively characterized. Attempts to remove this layer by UHV annealings 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.

引用

页码：56 / 61

页数：6

共 27 条

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