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Journal of Physical Studies 15(3), Article 3401 [4 pages] (2011)
DOI: https://doi.org/10.30970/jps.15.3401 SOME PARAMETERS OF CRYSTAL LATTICE DYNAMICS IN CaF2, LiF, NaCl AND KClM. D. Raransky{1}, V. N. Balazyuk{1}, V. M. Sergeev{2}, M. I. Melnyk{1}
1Yu. Fedkovych Chernivtsi National University,
2, Kotsyubynsky St., 58012, Chernivtsi, Ukraine |
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In this paper we propose a pendulum fringe method for measuring the basic parameters of crystal lattice dynamics that allows calculating with high precision the temperature and pressure dependence of structural amplitudes \textit{F${}_{H}$}(\textit{T}, \textit{P}) without measuring the energy parameters of dispersion. It is shown that theoretical calculation of the Debye temperature dependence $θ$\textit{${}_{D}$}(\textit{T}) should take into account the contribution of phonon $Δ $\textit{M} and potential $β$$Δ $\textit{T} components.
PACS number(s): 41.50.+h, 65.00.00