A SEXAFS STUDY OF THE P(2 X 2)-O/NI(111) SYSTEM

被引：14
|
作者：
HAASE, J
HILLERT, B
BECKER, L
PEDIO, M
机构：
[1] Fritz-Haber-Institut der Max-Planck-Gesellschaft, D-1000 Berlin 33
来源：
SURFACE SCIENCE | 1992年 / 262卷 / 1-2期
关键词：
D O I：
10.1016/0039-6028(92)90453-D
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：
Oxygen K-edge SEXAFS studies on the p(2 x 2)-O/Ni(111) system show that the O atoms are located in threefold coordinated fcc sites with a nearest-neighbour O-Ni bond length of 1.85 +/- 0.03 angstrom. The SEXAFS data are compatible with outward shifts of the three nearest-neighbour Ni atoms by up to 0.2 angstrom. It is shown that a possible outward shift of the three nearest-neighbour Ni atoms must be coupled with an inward shift of the next nearest-neighbour Ni atoms by roughly the same amount.
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页码：8 / 14
页数：7
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