Characteristic Debye temperature of ammonium fluoroberyllate, (NH4)2BeF4
Acta Crystallographica Section A: Crystal Physics, Diffraction, Theoretical and General Crystallography
, Volume 38 (3): 388 – May 1, 1982
Abstract
From the elastic stiffness constants Cij of ammonium fluoroberyllate at room temperature, wave velocity surfaces have been calculated and are shown in three different sections (XY, YZ, ZX). The mean sound velocity in the crystal has thus been determined and used to calculate the Debye temperature of (NH4)2BeF4. The Debye temperature so determined is 381 K. Some of the bulk elastic properties of polycrystalline (NH4)2BeF4 have also been calculated using the above Cij values.
