Thermal instability of decahedral structures in platinum nanoparticles

Details Thermal instability of decahedral structures in platinum nanoparticles Thermal instability of decahedral structures in platinum nanoparticles

2006-08-16

arxiv.org/abs/cond-mat/0608345v1

European Physical Journal D 43, 11-14 (2007)

Physics

Condensed Matter

Materials Science

11 pages, 5 figures

Scientific paper

10.1140/epjd/e2007-00057-1

We conduct molecular dynamics simulations of 887 and 1389-atom decahedral platinum nanoparticles using an embedded atom potential. By constructing microcanonical caloric curves, we identify structural transitions from decahedral to fcc in the particles prior to melting. The transitions take place during phase coexistence and appear to occur via melting of the decahedral structure and subsequent recrystallisation into the fcc structure.

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