Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2004-02-03
J. Chem. Phys. 120, 6765 (2004)
Physics
Condensed Matter
Soft Condensed Matter
6 pages, 4 figures
Scientific paper
10.1063/1.1667880
We compute the equilibrium concentration of stacking faults and point defects in polydisperse hard-sphere crystals. We find that, while the concentration of stacking faults remains similar to that of monodisperse hard sphere crystals, the concentration of vacancies decreases by about a factor two. Most strikingly, the concentration of interstitials in the maximally polydisperse crystal may be some six orders of magnitude larger than in a monodisperse crystal. We show that this dramatic increase in interstitial concentration is due to the increased probability of finding small particles and that the small-particle tail of the particle size distribution is crucial for the interstitial concentration in a colloidal crystal.
Frenkel Daan
Pronk Sander
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