THE STRUCTURE OF MONOLAYER FILMS OF FEO ON PT(111)

被引：116
作者：
GALLOWAY, HC
BENITEZ, JJ
SALMERON, M
机构：
[1] LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720
[2] UNIV SEVILLE,DEPT QUIM INORGAN,SEVILLE,SPAIN
来源：
SURFACE SCIENCE | 1993年 / 298卷 / 01期
关键词：
D O I：
10.1016/0039-6028(93)90089-3
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 structure and growth of iron oxide monolayers on Pt(111) has been studied by scanning tunneling microscopy. Atomically resolved images reveal a non-coincidence overlayer lattice where a short overlayer periodicity (approximately 3 angstrom) is modulated by a larger periodicity of approximately 26 angstrom. We explain this result as due to a bilayer of FeO with structure similar to the (111) plane of wustite (cubic FeO with the NaCl structure) overlaying the Pt(111) surface. A small rotational mismatch (0.6-degrees +/- 0.3-degrees) between overlayer and substrate is observed that produces two domains. Measurements of the relative angular rotation of these domains allowed accurate determination of the monolayer Fe-Fe (or 0-0) distances as 3.09 +/- 0.02 angstrom.
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页码：127 / 133
页数：7
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