COMPLEX ALLOY PHASES FOR BINARY HARD-DISC MIXTURES
COMPLEX ALLOY PHASES FOR BINARY HARD-DISC MIXTURES
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DOI：
10.1080/13642819308215284
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发表时间：
1993-07-01
期刊：
影响因子：
--
通讯作者：
HENLEY, CL
中科院分区：
文献类型：
--
作者：
LIKOS, CN;HENLEY, CL
We investigate the phase diagram of two-dimensional binary mixtures of hard discs. There are two parameters in the problem, the ratio r of the radii of the two discs, and the concentration p of small discs. We determine the possible phases by trying different periodic structures and minimizing the area per particle of the alloy for given r and p. We discover over ten distinct pure phases, along with large regions of the phase diagram which are occupied by 'lattice gas' and 'random tiling' phases. The system tends to separate into two coexisting triangular lattices for r greater than or similar to 0.5. The phase diagram becomes increasingly complicated at small size ratio and large concentrations of small discs.
