DIRECT OBSERVATIONS OF ADATOM-SURFACE-ATOM REPLACEMENT - PT ON NI(110)

被引：74

作者：

KELLOGG, GL

机构：

[1] Sandia National Laboratories, Albuquerque

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.67.216

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Field-ion-microscope observations provide direct evidence that Pt adatoms replace Ni(110) surface atoms at temperatures above 105 K. The directions of the individual displacements in this replacement process are consistent with a model involving concerted motion of the adatom and substrate atom. The activation barrier for the exchange is estimated to be 0.28 eV.

引用

页码：216 / 219

页数：4

共 13 条

[1] DIFFUSION OF SINGLE ADATOMS OF PLATINUM, IRIDIUM AND GOLD ON PLATINUM SURFACES [J].