Journal
EUROPEAN PHYSICAL JOURNAL D
Volume 43, Issue 1-3, Pages 53-56Publisher
SPRINGER
DOI: 10.1140/epjd/e2007-00091-y
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Ag-Au bimetallic nanoalloy clusters with 38 atoms have been studied using a Gupta many-body potential combined with a genetic algorithm search technique. Clear changes in structure are observed as a function of Ag/Au composition and there is a clear tendency for surface segregation of the Ag atoms. Cluster stability is found to increase with increasing number of Au-Au and Ag-Au bonds and the segregation has been rationalised in terms of bonds strengths and elemental surface energies.
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