Effect of multiple scattering on the S K-edge EXAFS of Ni(110)-c(2x2)-S

被引：6
作者：
Harte, SP
Vinton, S
Lindsay, R
Hakansson, L
Muryn, CA
Thornton, G
Dhanak, VR
Robinson, AW
Binsted, N
Norman, D
Fischer, DA
机构：
[1] UNIV MANCHESTER,INTERDISCIPLINARY RES CTR SURFACE SCI,MANCHESTER M13 9PL,LANCS,ENGLAND
[2] UNIV MANCHESTER,DEPT CHEM,MANCHESTER M13 9PL,LANCS,ENGLAND
[3] UNIV LIVERPOOL,INTERDISCIPLINARY RES CTR SURFACE SCI,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND
[4] SERC,DARESBURY LAB,CCLRC,WARRINGTON WA4 4AD,CHESHIRE,ENGLAND
[5] NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899
来源：
SURFACE SCIENCE | 1997年 / 380卷 / 01期
基金：
英国工程与自然科学研究理事会;
关键词：
chalcogens; chemisorption; extended X-ray absorption fine structure; low index single crystal surfaces; nickel;
D O I：
10.1016/S0039-6028(96)01590-7
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 have re-examined the surface geometry of Ni(110)-c(2x2)-S using SEXAFS. Data out to an electron wavevector of 9 Angstrom(-1) are analysed with a new code to assess the influence of multiple scattering. The first-shell S-Ni distance is determined to be 2.20+/-0.02 Angstrom with the next-nearest neighbour distance being 2.29+/-0.02 Angstrom, giving a top-layer Ni expansion of 14+/-3% relative to the bulk. The influence of multiple scattering is sufficiently small not to modify these values.
引用
收藏
页码：L463 / L468
页数：6
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