Abstract
The dispersion curves for crystal lattices of univalent mercury halides Hg2 Hal 2 (Hal=Cl, Br, I) are calculated from the experimental frequencies at singular points of the Brillouin zone and the velocities of sound in the framework of the valence-force field model. The results of calculating the dispersion branch of the TA soft mode along the Γ-X direction of the Brillouin zone and the calculated elastic moduli are presented. The calculated values are in good agreement with the experimental data.
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Translated from Fizika Tverdogo Tela, Vol. 46, No. 11, 2004, pp. 2040–2044.
Original Russian Text Copyright © 2004 by Zadokhin, Solodovnik.
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Zadokhin, B.S., Solodovnik, E.V. Simulation of the dynamic properties of Hg2 Hal 2 crystals (Hal=Cl, Br, I). Phys. Solid State 46, 2110–2114 (2004). https://doi.org/10.1134/1.1825557
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DOI: https://doi.org/10.1134/1.1825557