Fractionated crystallisation in a polydisperse mixture of hard spheres

Details Fractionated crystallisation in a polydisperse mixture of hard spheres Fractionated crystallisation in a polydisperse mixture of hard spheres

1998-09-08

arxiv.org/abs/cond-mat/9809131v1

Physics

Condensed Matter

10 pages, 4 figures to appear in J. Chem. Phys

Scientific paper

We consider the nature of the fluid-solid phase transition in a polydisperse mixture of hard spheres. For a sufficiently polydisperse mixture crystallisation occurs with simultaneous fractionation. At the fluid-solid boundary, a broad fluid diameter distribution is split into a number of narrower fractions, each of which then crystallises. The number of crystalline phases increases with the overall level of polydispersity. At high densities, freezing is followed by a sequence of demixing transitions in the polydisperse crystal.

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