This article is cited in 3 papers

Lattice dynamics

Elastic properties of compressed rare-gas crystals in a model of deformable atoms

E. E. Gorbenko^a, E. P. Troitskaya^b, E. A. Pilipenko<sup>b

a</sup> Lugansk Taras Shevchenko National University
^b O O Galkin Donetsk Institute for Physics and Engineering, Donetsk, Ukraine

Abstract: The elastic properties of compressed Ne, Ar, Kr, and Xe rare-gas crystals were studied in a model of deformable and polarizable atoms. The second-order Fuchs elasticity moduli, their pressure derivatives, and the Zener elastic anisotropy ratio were calculated with allowance for three-body interaction and quadrupole deformation in electron shells within a wide pressure range. Comparison with the experiment and results of other authors was performed. In xenon at a compression of 0.6, the shear modulus $B_{44}$ was observed to become zero, thus corresponding to the FCC–HCP transition at 75 GPa.

Received: 10.05.2016

DOI: 10.21883/FTT.2017.01.43962.167

 English version: Physics of the Solid State, 2017, 59:1, 132–140

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