The development of nickel ultra-thin films and the interaction with oxygen on the SrTiO3(100) surface studied by soft X-rays photoelectron spectroscopy

被引：10

作者：

Kamaratos, M

Vlachos, D

Foulias, SD

Argirusis, C

机构：

[1] Univ Ioannina, Dept Phys, GR-45110 Ioannina, Greece

[2] Tech Univ Clausthal, Inst Met, AG Thermochem & Mikrokinet, D-38678 Clausthal Zellerfeld, Germany

来源：

SURFACE REVIEW AND LETTERS | 2004年 / 11卷 / 4-5期

关键词：

nickel; strodium titanate; oxygen; nickel oxide; adsorption; soft X-ray photoelectron spectroscopy;

D O I：

10.1142/S0218625X04006402

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：

The electronic properties of very thin Ni films on the SrTiO3(100)-Fe doped surfaces and their interaction with oxygen have been studied by soft X-rays photoelectron spectroscopy measurements. Nickel starts to become metallic on the surface in the very early adsorption stages. Oxygen adsorption on the nickel covered SrTiO3(100) surface leads gradually to an almost complete oxidation of the nickel overlayer. The oxidation seems to take place through two different oxidation states, which according to the literature are due to the Ni2+ and Ni3+ species. The heating of the O/Ni/SrTiO3 system at 850 K, causes a partial reduction of the nickel overlayer.

引用

收藏

页码：419 / 425

页数：7

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