STRUCTURE AND COMPLETE CHEMICAL PASSIVATION OF PT(997)

被引：30

作者：

HAHN, E

FRICKE, A

RODER, H

KERN, K

机构：

[1] Institut de Physique Expérimentale, EPFL, PHB-Ecublens

来源：

SURFACE SCIENCE | 1993年 / 297卷 / 01期

关键词：

D O I：

10.1016/0039-6028(93)90011-8

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 report on scanning tunneling microscopy and infrared reflection absorption spectroscopy investigations of the steppe Pt(997) surface. The surface shows a regular terrace-step-structure with only moderate variations of the terrace widths with respect to the nominal structure. The adsorption of CO as well as the coadsorption of hydrogen and CO is studied. It is shown that covering the surface with a full monolayer of hydrogen at 165 K provides its complete passivation against adsorption from the residual gas atmosphere, without affecting the terrace-step-configuration. Thus the surface can be kept clean in UHV over months, a necessary precondition to serve as diffractive element in atom beam optics.

引用

页码：19 / 26

页数：8

共 36 条

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