Abstract

In the present study, we have used a mean field theory that is also a modified Ginzburg-Landau expansion in the order parameter. Single mode expansion of the order parameter were taken and written in terms of the reciprocal lattice vectors corresponding to the first reflection of the classical phases in such a way that the corresponding contour plot exhibits the required features of the respective phases. ’Wolfram Mathematica 8.0’ software was used for calculations and the free energy optimizations. The present theory stabilizes the classical phases in the concentration – temperature phase diagram. And percentage of the stabilized area for the lamellar, hexagonal, and BCC phases, are found to be 35.41%, 42.98%, and 21.61%, respectively.

摘要

在本研究中，我们使用了平均场论，它也是阶参数中经过修改的 Ginzburg-Landau 展开式。采用与经典相的第一次反射相对应的倒数晶格向量对阶参数进行单模扩展并写入，使得相应的等高线图表现出各个相的所需特征。“Wolfram Mathematica 8.0”软件用于计算和自由能优化。本理论稳定了浓度-温度相图中的经典相。发现层状、六方和 BCC 相的稳定面积百分比分别为 35.41%、42.98% 和 21.61%。