Abstract :
In the present paper, the computation of
the phonon dynamics of binary Mg70Zn30 metallic
glass is reported using the well-recognized model
potential of Gajjar et al. The present study includes
the phonon dispersion curves (PDC), elastic and
thermodynamic properties such as longitudinal sound
velocity tL, transverse sound velocity tT, Debye
temperature hD, isothermal bulk modulus BT, modulus
of rigidity G, Poisson’s ratio r and Young’s
modulus Y and specific heat capacity CV of the glass.
Three theoretical models given by Hubbard–Beeby
(HB), Takeno–Goda (TG) and Bhatia–Singh (BS) are
used to compute the PDC. Five local field correction
functions proposed by Hartree (H), Taylor (T),
Ichimaru–Utsumi (IU), Farid et al. (F) and Sarkar
et al. (S) are employed for the first time to study the
effect of exchange and correlation in the aforesaid
properties. The pseudo-alloy-atom (PAA) model is
applied for the first time instead of Vegard’s Law.
