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

页码：L463 / L468

页数：6

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