Abstract

A method has been proposed for calculating the lattice parameter of binary substitutional solid solutions, which takes into account the presence of pressure (p) in alloys. The method has been applied to SiGe and CuAu alloys. It has been shown that, at p = 0, the deviation from Vegard’s law (Δl) results from the difference in compressibility and atomic volume between the pure constituent components of the alloys. With increasing pressure, Δl increases. According to our calculations, the Δl(p) of SiGe becomes positive at p₀ = 0.685 GPa.

中文翻译：

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合金中压力增大与维加德定律的偏差

摘要

已经提出了一种计算二元替代固溶体的晶格参数的方法，该方法考虑了合金中压力（p）的存在。该方法已应用于SiGe和CuAu合金。已经显示的是，在p = 0时，从维加德定律（Δ偏差升）从可压缩性和合金的纯构成成分之间的原子体积的差的结果。随着压力的增加，Δ升增加。根据我们的计算中，Δ升（p的SiGe）变成在正p ₀  = 0.685 GPA。