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Multi-cell Monte Carlo method for phase prediction
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DOI：10.1038/s41524-019-0259-z.png)
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摘要
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We propose a Multi-Cell Monte Carlo algorithm, or (MC)(2), for predicting stable phases in chemically complex crystalline systems. This algorithm takes advantage of multiple cells to represent possible phases, while eliminating the size and concentration restrictions in the previous counterparts. Free atomic transfer among cells is achieved via the application of the lever rule, where an assigned molar ratio virtually controls the percentage of each cell in the overall simulation, making (MC)(2) the first successful algorithm for simulating phase coexistence in crystalline solids. During the application of this method, all energies are directly computed via density functional theory calculations. We test the method by successful prediction of the stable phases of known binary systems. We then apply the method to a quaternary high-entropy alloy. The method is particularly powerful in predicting stable phases of multicomponent systems, for which phase diagrams do not exist.
Keyword:
EQUILIBRIA
SIMULATION
STABILITY
DISORDER
ALLOY
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11.9
论文数:
2.4K
被引数:
1.7W
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