Issue 4, 2012

A novel structural motif for free CoPt nanoalloys

Abstract

The growth of small free platinum–cobalt nanoclusters has been modelled through the one-by-one atom deposition technique based on classical Molecular Dynamics. A novel structural motif, reminiscent of two stacked poly-icosahedral pancakes, has been found in close competition with a Marks-decahedron and a face-centred-cubic geometry at around 75 atoms for a cobalt-rich stoichiometry. The results have been confirmed at the density-functional level, which reveals an unexpected stability of this new morphology over a wide range of chemical compositions. Magnetic properties have been also discussed.

Graphical abstract: A novel structural motif for free CoPt nanoalloys

Article information

Article type
Paper
Submitted
24 Aug 2011
Accepted
19 Oct 2011
First published
23 Nov 2011

Nanoscale, 2012,4, 1160-1166

A novel structural motif for free CoPt nanoalloys

I. Parsina, C. DiPaola and F. Baletto, Nanoscale, 2012, 4, 1160 DOI: 10.1039/C1NR11171J

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