CLUSTER ADSORPTION ON AMORPHOUS AND CRYSTALLINE SURFACES: A MOLECULAR DYNAMICS STUDY OF MODEL Pt ON Cu AND MODEL Pd ON Pt.

Steve Garofalini, T. Halicioglu, G. M. Pound

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Abstract

Molecular dynamics was used to study the structure, dispersion and short-time behavior of ten-atom clusters adsorbed onto amorphous and crystalline substrates, in which the cluster atoms differed from the substrate atoms. Two adatom-substrate model systems were chosen; one, in which the interaction energy between adatom pairs was greater than that between substrate pairs, and the other, in which the reverse was true. At relatively low temperature ranges, increased dispersion of cluster atoms was obtained: (a) on the amorphous substrate as compared to the FCC(100) surface, (b) with increasing reduced temperature, and (c) with adatom-substrate interaction energy stronger than adatom-adatom interaction.

Original languageEnglish
Pages (from-to)717-721
Number of pages5
JournalJournal of vacuum science & technology
Volume19
Issue number3
DOIs
Publication statusPublished - Sep 1981

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ASJC Scopus subject areas

  • Engineering(all)

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