Theoretical Investigation of Coarsening Process of L10-Ordered Domain Based on Phase Field Method and Cluster Variation Method
Theoretical Investigation of Coarsening Process of L10-Ordered Domain Based on Phase Field Method and Cluster Variation Method
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基于相场法和簇变分法的L10阶域粗化过程的理论研究
DOI：
10.2320/matertrans.43.2189
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发表时间：
2002
影响因子：
1.2
通讯作者：
T. Mohri
中科院分区：
文献类型：
--
作者：
M. Ohno;T. Mohri
采用相场法和集团变分法的混合计算方法研究了有序畴竞争生长引起的长程有序参数（LRO）的弛豫过程。结果表明，粗化过程中的曲率驱动的增长和合并的同相有序畴。在早期退火期间，有序域的平均半径与t1/2成比例地增加，如由曲率驱动的生长所预测的。然而，在后期，这种关系的偏离表现为聚结过程。LRO弛豫动力学在很大程度上取决于聚结事件的频率。
A hybridized calculation of Phase Field Method and Cluster Variation Method is applied to investigate the relaxation process of Long-Range-Order parameter (LRO) originating from competitive growth of ordered domains. It is shown that the coarsening process proceeds by both the curvature-driven growth and coalescence among in-phase ordered domains. In the early annealing period, an average radius of ordered domains increases proportional to t 1/2 as predicted by the curvature-driven growth. In the later period, however, a deviation from this relation is manifested by coalescence process. The LRO relaxation kinetics largely depends on the frequency of coalescence event.