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Molecular-Dynamics Study of the Morphological Evolution of a Metallic Cluster Deposited on a Surface

Published online by Cambridge University Press:  01 February 2011

Kazuhito Shintani ,
K. Terajima  and
Y. Kometani
Kazuhito Shintani
Affiliation:
[email protected], University of Electro-Communications, Department of Mechanical Engineering and Intelligent Systems, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585, Japan, 81-424-43-5393, 81-424-84-3327
K. Terajima
Affiliation:
[email protected], University of Electro-Communications, Department of Mechanical Engineering and Intelligent Systems, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585, Japan
Y. Kometani
Affiliation:
[email protected], University of Electro-Communications, Department of Mechanical Engineering and Intelligent Systems, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585, Japan
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Abstract

The morphological evolution of a Co cluster deposited on a Cu substrate is investigated by means of molecular-dynamics simulation. The many-body potential based on the second moment approximation of a tight-binding Hamiltonian (TB-SMA) is employed to calculate the interactions between Co and Cu atoms. The results show that the effect of the substrate anisotropy appears in the morphology of a deposited cluster. It is also revealed that the total period of the structural change of such a cluster can be divided into the three stages, viz., (I)change to an epitaxial structure, (II)overspread of diffusing Cu atoms on the cluster, and (III)solid dissolution of Co atoms into the Cu substrate.

Keywords

Coepitaxynanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 924: Symposium Z – Mechanics of Nanoscale Materials and Devices , 2006 , 0924-Z08-05
Copyright
Copyright © Materials Research Society 2006

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