Epitaxial growth of CoO on the (001) surface of bct cobalt

被引：14

作者：

Gazzadi, GC

Borghi, A

di Bona, A

Valeri, S

机构：

[1] Ist Nazl Fis Mat, I-41100 Modena, Italy

[2] Univ Modena, Dipartimento Fis, I-41100 Modena, Italy

来源：

SURFACE SCIENCE | 1998年 / 402卷 / 1-3期

关键词：

Auger spectroscopy; cobalt oxide; epitaxy; modulated electron emission; structural characterization;

D O I：

10.1016/S0039-6028(97)00920-5

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：

Adsorption of oxygen on a (001) surface of 10 monolayers thick, metastable cubic Co film epitaxially grown on the Fe(001) surface was studied at 300 and 470 K by means of primary-beam diffraction modulated electron emission, X-ray photoelectron spectroscopy and Auger electron spectroscopy. At 300 K, the formation of CoO in the very first layer was observed, in the typical rock salt structure, 45 degrees rotated with respect to the square unit mesh of the remaining, underlying Co film. At 470 K, the oxide extends in thickness involving the whole Co film. Similar behavior has been observed for the (11 (2) over bar 0) surface of the hcp phase. On both surfaces, the oxide layer appears tetragonally distorted. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：632 / 635

页数：4

共 21 条

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