Due to the highly anisotropic behaviour from the resulting formula, it
is interesting to determine its elastic waves by obtaining the
information from the set of cubic elastic constants. The cubic symmetry
of corresponding alloys certifies that pure modes of elastic waves can
exists in [100], [110] and [111] directions. The respective
phase velocity and longitudnal along with transverse velocity sre
calcaled in these directions and are displayed in Table 4 .
These quatites are helpful in predicting the Debye temperature by
classical method using mean sound velocity [39]. The Debye
temperature (θD ) of a material for both the
compounds can be projected as: