Research of the behaviour of O chemisorption on the (110) surface of Rhx-Pt1-x alloy

被引：0

作者：

Zhang, H ^{[1
]}

Zhang, GY ^{[1
]}

Wang, RD ^{[1
]}

Zhong, B ^{[1
]}

机构：

[1] Shenyang Normal Univ, Coll Phys Sci & Technol, Shenyang 110034, Peoples R China

来源：

CHINESE PHYSICS | 2006年 / 15卷 / 03期

关键词：

chemisorption; surface segregation; recursion method; density of states;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An atomic group model of the disordered binary alloy Rh-x-Pt1-x has been constructed to investigate surface segregation. According to the model, we have calculated the electronic structure of the Rh-x-Pt1-x alloy surface by using the recursion method when O atoms are adsorbed on the Rh-x-Pt1-x(110) surface under the condition of coverage 0.5. The calculation results indicate that the chemical adsorption of O changes greatly the density of states near the Fermi level, and the surface segregation exhibits a reversal behaviour. In addition, when x < 0.3, the surface on which O is adsorbed displays the property of Pt; whereas when x > 0.3 it displays the property of Rh.

引用

页码：641 / 644

页数：4

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