EXAFS study of the crystallographic structure of cobalt thin films on Pt(111)

被引:23
作者
Thiele, J
Belkhou, R
Bulou, H
Heckmann, O
Magnan, H
LeFevre, P
Chandesris, D
Guillot, C
机构
[1] UNIV PARIS 11,UTILISAT RAYONNEMENT ELECTROMAGNET LAB,F-91405 ORSAY,FRANCE
[2] CEA,DRECAM,SRSIM,F-91191 GIF SUR YVETTE,FRANCE
[3] INST PHYS & CHIM MAT STRASBOURG,UMR 046 CNRS,GRP SURFACES INTERFACES,F-67037 STRASBOURG,FRANCE
[4] UNIV CERGY PONTOISE,LAB PHYS MAT SURFACES,F-95806 CERGY,FRANCE
关键词
alloys; cobalt; growth; magnetic films; near edge extended X-ray absorption fine structure (NEXAFS); platinum; surface extended X-ray absorption fine structure (SEXAFS);
D O I
10.1016/S0039-6028(97)00180-5
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 growth and structure of cobalt on a platinum (111) single crystal is studied using X-ray absorption spectroscopy at the cobalt K-edge. A polarisation dependent analysis of the EXAFS spectra shows first neighbours distances in Co/Pt(111) films identical to those in bulk cobalt fur thicknesses between 2 and 10 monolayers. The full shell spectra polarisation dependence indicates the hexagonal stacking of the thicker film. Influences of annealing and recovering by platinum on the structure of the cobalt films are also described. (C) 1997 Elsevier Science B.V.
引用
收藏
页码:120 / 128
页数:9
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