PHONONS IN DISORDERED SYSTEMS. beta -CuZn.

被引：0
|
作者：
Grossman, A.B. [1 ]
Yegorushkin, V.Ye. [1 ]
机构：
[1] Siberian Physicotechnical Inst, USSR, Siberian Physicotechnical Inst, USSR
来源：
Physics of Metals and Metallography | 1984年 / 57卷 / 03期
关键词：
CRYSTALS - Lattice Vibrations - METALLOGRAPHY - Order-Disorder - PHONONS - Spectrum Analysis;
D O I：
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学科分类号：
摘要：
The method of the mean T-matrix is generalized to partially ordered alloys in the presence of diagonal disordered. A determinant equation is obtained for the complex vibrational spectrum of atoms in such systems. The method of a virtual crystal is generalized to include the case of partially ordered alloys with non-diagonal disorder and the frequencies of atomic vibrations on their 'own' and 'alien' sublattices obtained. The vibrational spectrum of beta -CuZn atoms is calculated for different values of the long-range order parameter. The results indicate the presence of hybridization of atomic vibrations on the different sublattices.
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页码：44 / 49
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