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Scanning Tunneling Microscopy of Platinum Clusters on Hop-Graphite

Published online by Cambridge University Press:  21 February 2011

Klaus Sattler ,
Ulrich Mueller ,
Jie Xhie ,
Narayana Venkateswaran  and
Gargi Raina
Klaus Sattler
Affiliation:
Department of Physics and Astronomy, University of Hawaii, Watanabe Hall, 2505 Correa Road, Honolulu, Hawaii 96822, USA
Ulrich Mueller
Affiliation:
Department of Physics and Astronomy, University of Hawaii, Watanabe Hall, 2505 Correa Road, Honolulu, Hawaii 96822, USA
Jie Xhie
Affiliation:
Department of Physics and Astronomy, University of Hawaii, Watanabe Hall, 2505 Correa Road, Honolulu, Hawaii 96822, USA
Narayana Venkateswaran
Affiliation:
Department of Physics and Astronomy, University of Hawaii, Watanabe Hall, 2505 Correa Road, Honolulu, Hawaii 96822, USA
Gargi Raina
Affiliation:
Department of Physics and Astronomy, University of Hawaii, Watanabe Hall, 2505 Correa Road, Honolulu, Hawaii 96822, USA
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Abstract

We report on recent studies of small platinum clusters supported on highly-oriented pyrolytic graphite, using a scanning tunneling microscope (STM). The clusters are generated by vapor deposition of single atoms with subsequent diffusion and growth processes occurring on large, flat and ordered substrates. Single adatoms, small clusters and larger islands are imaged with atomic resolution and their atomic structures are determined by direct observation. We find different isomeric structures for clusters of one size. Taking the substrate lattice as reference we determine bond lengths and angles for the clusters. We investigate the effect of the substrate on the adsorbed particles.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 187: Symposium J – Thin Film Structures and Phase Stability , 1990 , 255
Copyright
Copyright © Materials Research Society 1990

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