Molecular dynamics study of the melting behaviour of seven-atom clusters of fcc transition and noble metals on the (111) surface of the same metal using the embedded atom model

被引:15
|
作者
Longo, RC [1 ]
Rey, C [1 ]
Gallego, LJ [1 ]
机构
[1] Univ Santiago Compostela, Fac Fis, Dept Fis Mat Condensada, E-15706 Santiago, Spain
关键词
clusters; copper; gold; molecular dynamics; nickel; palladium; platinum; silver; surface diffusion;
D O I
10.1016/S0039-6028(00)00548-3
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
Using the Voter and Chen version of the embedded atom model, we performed molecular dynamics simulations to analyse the phase change behaviour of X-7 clusters on the X(111) surface (X = Ni, Pd, Pt, Cu, Ag, Au). Our calculations show that all the supported clusters undergo well-defined melting transitions preceded by loss of shape. However, there are significant differences among these metals as regards the mechanism of pre-melting cluster diffusion on the (111) surface. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:L441 / L445
页数:5
相关论文
共 14 条