Il Nuovo Cimento D

, Volume 14, Issue 11, pp 1097–1103 | Cite as

Lattice dynamics, thermodynamic and elastic properties of CdGeAs2

  • V. G. Tyuterev
  • S. I. Skachkov
Article

Summary

An extended Keating’s model with two-bond-stretching and one-angle-bending force constants within the rigid-ion approximation is applied to the investigation of the lattice dynamics of CdGeAs2. Five model parameters of the theory are determined by a least-square fitting to the infrared reflectivity measurements. The phonon spectrum along two high-symmetry directions and the one-phonon density of states are calculated. The theoretical values of the elastic constants, the constant-volume specific heat and the Debye temperature show a reasonable agreement with the experimental data reported by other authors.

PACS 63.20

Phonons and vibrations in crystal lattices 

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Copyright information

© Società Italiana di Fisica 1992

Authors and Affiliations

  • V. G. Tyuterev
    • 1
  • S. I. Skachkov
    • 2
  1. 1.Siberian Physical-Technical InstituteTomskRussia
  2. 2.Research Institute of Building MaterialsTomskRussia

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