ATOMIC STRUCTURE AND COMPOSITION OF CLEAN AND ADSORBATE MODIFIED SURFACES OF ORDERED AND RANDOM ALLOYS

D. M. Zehner
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D. M. Zehner: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831–6057, USA

Surface Review and Letters (SRL), 1996, vol. 03, issue 05n06, 1637-1650

Abstract: As a consequence of bulk truncation, the atomic structure and composition within the surface region of an ordered or random alloy may differ significantly from that of the bulk. Specifically, the response to the rearrangement resulting from the reduction of surface energy may cause elemental redistribution within the outermost layers and two- or three-dimensional atomic reordering. Furthermore, the presence of adsorbates may have a pronounced effect on these properties and cause significant changes. These properties for some surfaces of transition-metal aluminides, transition-metal carbides, and random alloys will be presented.

Date: 1996
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DOI: 10.1142/S0218625X96002606

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