Binary mixtures of suspended hard-sphere colloidal particles, radius ratio RB/RA=0.58, were observed to undergo entropically driven freezing transitions into both the AB₂ and the AB₁₃ superlattice structures at different relative proportions of the two species. The structures were identified by powder light crystallography and by electron microscopy of the dried solid phases. An approximate (constant volume) phase diagram containing three eutectics was determined. The results are compared with earlier work at size ratio 0.62.
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Bartlett et al. (1992) studied this question.
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