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利用定向凝固法生长的一系列Hg_(1-x)Cd_xTe合金晶体,其组分范围从x=0.2到x=0.4轴向组分分布的测量结果,可以用适当的扩散方程的精确数值解来解释,它把分凝系数和凝固速率随组分的变化都考虑在内。所有生长速率的全部解通常与实验数据很一致,并且,证实了早期使用近似分析解观察结果的正确性。有效质量扩散系数与组分或熔体温度没有明显关系。然而在最高的生长速率下,得到了稍高的扩散系数。
A series of Hg_ (1-x) Cd_xTe alloy crystals grown by directional solidification, whose composition ranges from x = 0.2 to x = 0.4, can be solved with the exact numerical solution of an appropriate diffusion equation Explain that it takes into account the segregation coefficient and the rate of solidification as a function of the composition. The overall solution to all growth rates is usually consistent with the experimental data and confirms the correctness of the early analytical results using approximate analytic solutions. The effective mass diffusion coefficient is not significantly related to the component or melt temperature. However, at the highest growth rate, a slightly higher diffusion coefficient was obtained.