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物理学报  2010 

Simulation of crystal growth using phase-field crystal method
相场晶体法模拟过冷熔体中的晶体生长

Keywords: phase-field crystal,free energy function,undercooled liquid,crystal growth
相场晶体
,自由能函数,过冷熔体,晶体生长

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Abstract:

The phase-field crystal (PFC) model is used to simulate crystal growth from undercooled liquid by the finite difference method. The effects of phase region and undercooling on crystal growth process are analyzed. The simulation results show that crystal growth is inhibited in the region of liquid-crystal coexistence where liquid-crystal boundary becomes thicker gradually. In the single crystal phase region, crystallization is enhanced with undercooling increasing,while liquid-crystal boundary becomes thinner. It is found that there is a linear relationship between crystal growth velocity and undercooling.

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