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首页> 外文期刊>Journal of Experimental and Theoretical Physics >Calculations of the Complete Morphological Phase Diagram for Nonequilibrium Growth of a Spherical Crystal under Arbitrary Surface Kinetics
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Calculations of the Complete Morphological Phase Diagram for Nonequilibrium Growth of a Spherical Crystal under Arbitrary Surface Kinetics

机译:任意表面动力学下球形晶体非平衡生长的完整形态相图的计算

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摘要

Complete morphological diagrams (with stable, metastable, and absolutely unstable regions) were calculated for the problem of morphology selection under the conditions of nonequilibrium growth of a spherical crystal taking into account arbitrary kinetic process rates at the boundary and a linear dependence of the growth rate on supersaturation. The consideration was performed by jointly using linear stability analysis and the principle of maximum entropy production. The principal difference between kinetically and diffusion-controlled crystal growth is the possibility of the coexistence of three or more morphological phases under the same conditions in the former case. It was shown that, at the transition point, the rate of accretion of the growing crystal mass increased in a jump. The jump value was studied as a function of the parameters of the problem.
机译:针对球形晶体非平衡生长条件下的形态选择问题,计算了完整的形态图(具有稳定,亚稳态和绝对不稳定的区域),并考虑了边界处的任意动力学过程速率和生长速率的线性依赖性在过饱和状态。通过联合使用线性稳定性分析和最大熵产生原理进行考虑。在动力学和扩散控制的晶体生长之间的主要区别在于,在前一种情况下,在相同条件下可以同时存在三个或三个以上形态相。结果表明,在转变点上,生长的晶体质量的积聚速率急剧增加。研究了跳跃值与问题参数的关系。

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