期刊
SURFACE SCIENCE
卷 566, 期 -, 页码 192-196出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.susc.2004.05.044
关键词
clusters; growth; molecular dynamics; nickel; silver; alloys
The growth of AgNi clusters is studied by means of Molecular Dynamics simulations at sizes between 200 and 300 atoms. It is found that core-shell structure with an Ni core and an Ag external shell are the most favorable in good agreement with experimental data. Core-shell structures energetics is studied also by a global optimization genetic algorithm, which predicts that the global minimum is an Ni core covered by an Ag shell already at small sizes. (C) 2004 Elsevier B.V. All rights reserved.
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