Open AccessSound velocities and thermal properties of BeX (X=S, Se and Te) alkaline-earth chalcogenides
Author(s) -
Salah Daoud
Publication year - 2016
Publication title -
international journal of scientific world
Language(s) - English
Resource type - Journals
ISSN - 2307-9037
DOI - 10.14419/ijsw.v5i1.6929
Subject(s) - debye model , beryllium , transverse plane , condensed matter physics , materials science , thermal conductivity , thermal , thermodynamics , debye , alkaline earth metal , lattice (music) , physics , alkali metal , quantum mechanics , nuclear physics , acoustics , structural engineering , engineering
The sound velocities and some thermal properties of BeX (X=S, Se and Te) beryllium-chalcogenides large band gaps semiconductors have been estimated by employing some usual theoretical and emperical formulas. The lattice parameters and the elastic stiffness constants used here are taken from the literature. The longitudinal, transverse and average elastic wave velocities, the Debye temperature, the melting temperature, the thermal conductivity and the Grüneisen parameter are successfully predicted and analyzed in comparison with the available experimental and theoretical data. In general, our obtained results of these quantities agree well with the experimental and other theoretical data of the literature.