Study on the oxidation of iron thin films on Pt(111) surfaces by using X-ray photoelectron spectroscopy

被引：0

作者：

Byun, B. -S. ^{[1
]}

Kim, M. -S.

Nahm, T. -U.

机构：

[1] Hanyang Univ, Dept Phys, Seoul 133791, South Korea

[2] Hanyang Univ, Quantum Photon Sci Res Ctr, Seoul 133791, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2006年 / 49卷 / 03期

关键词：

Fe3O4; iron films; Pt(111); oxidation; reduction; X-ray photoelectron spectroscopy;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigated the oxidation and the reduction of iron thin films deposited on Pt(111) surfaces by using X-ray photoelectron spectroscopy (XPS). Upon an oxygen exposure of 300 Langmuir at a film temperature of 873 K, the Fe layers were mostly oxidized as Fe3O4. When the Fe films were exposed to the same amount of oxygen at room temperature, partial oxidation as Fe3O4 was observed for a 3-ML Fe film while there was no oxidation for a 2-ML Fe film. On heating the films oxidized at 873 K, Fe3O4 was reduced to FeO, and even decomposition was observed. The underlying reasons for these chemical changes in iron and iron-oxide films are discussed.

引用

页码：1006 / 1010

页数：5

共 22 条

[1] MAGNETITE FE3O4(111) - SURFACE-STRUCTURE BY LEED CRYSTALLOGRAPHY AND ENERGETICS [J].