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Kwak, Sang Kyu
Kyu’s MolSim Lab @ UNIST
Research Interests
  • Molecular modeling and simulation, statistical thermodynamics, molecular physics

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Interface mixing behaviour of Lennard-Jones FCC (100) thin film

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Title
Interface mixing behaviour of Lennard-Jones FCC (100) thin film
Author
Gazali, PanjiKwak, Sang KyuSingh, Jayant K.
Keywords
FCC thin film and substrate; Interfacial mixing; Molecular dynamics; Monte Carlo simulation
Issue Date
2008
Publisher
TAYLOR & FRANCIS LTD
Citation
MOLECULAR PHYSICS, v.106, no.21-23, pp.2417 - 2423
Abstract
A modified Monte Carlo method combined with quenched molecular dynamics simulation is used to determine mixing energetics and concentration profiles at interface for systems containing mono-and bilayers of adatoms adsorbed on FCC (100) crystal surface. The systems under consideration are constructed via Lennard-Jones potential at temperatures near 0 K. For systems with monolayer of adatoms, intermixing at the interface becomes preferable with increasing magnitude of the potential well-depth ratio of adatom to substrate atom. The increasing tendency of intermixing is linearly enhanced when the adatom becomes smaller than the substrate atom, otherwise, the intermixing trend is non-linear and weaker. For systems with bilayers of adatoms, complex development of concentration profile is observed along with increasing magnitude of the potential well-depth ratio and atomic size difference between adatom and substrate atom. This behaviour is related to the interplay between contributions of asymmetric bond interaction and relaxation to minimise the total energy of the system.
URI
https://scholarworks.unist.ac.kr/handle/201301/6857
DOI
10.1080/00268970802502527
ISSN
0026-8976
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ECHE_Journal Papers
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