Surface energetics from the transition from step-flow growth to two-dimensional nucleation in metal homoepitaxy

被引：21
|
作者：
Markov, I
机构：
[1] Institute of Physical Chemistry, Bulgarian Academy of Sciences, Sofia
来源：
PHYSICAL REVIEW B | 1997年 / 56卷 / 19期
关键词：
D O I：
10.1103/PhysRevB.56.12544
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Expressions for the critical temperature for transition from step-flow growth to growth by two-dimensional nucleation are derived for the cases of low and high barriers for step-down diffusion. The comparison of the equations with experimental data from diffraction studies of metal homoepitaxy makes possible the evaluation of either the energy to break first-neighbor bonds or the activation energy for step-down diffusion. The expressions are used to evaluate the bend energies and the Ehrlich-Schwoebel barrier for step-down diffusion in the systems Ag/Ag(001), Cu/Cu(001), Pd/Pd(001), Fe/Fe(001), Ag/Ag(111), Cu/Cu(111), and Pt/Pt(111).
引用
收藏
页码：12544 / 12552
页数：9
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