MANY-BODY FORCES IN THE LATTICE-DYNAMICS OF SOME FCC TRANSITION-METALS

被引：24

作者：

PRAKASH, D

UPADHYAYA, JC

机构：

[1] Agra Coll, Agra, India, Agra Coll, Agra, India

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1988年 / 49卷 / 01期

关键词：

PHONONS;

D O I：

10.1016/0022-3697(88)90140-0

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In the present analysis, the interaction system of an fcc d-band metal is considered to be composed of two-body and many-body parts. We use a short-range three-body potential to deduce the contribution of many-body forces to the dynamical matrix of fcc structure. The inclusion of multi-particle forces in the transition metal model potential scheme of Animalu improves, in general, the transverse branches of phonon dispersion curves of Cu, Ag, Au and Pd and gives good agreement with the neutron data for all the metals.

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页码：91 / 96

页数：6

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