Open AccessSound velocities and Debye temperature of BeSe under high pressure up to 50 GPa
Author(s) -
Salah Daoud
Publication year - 2016
Publication title -
international journal of physical research
Language(s) - English
Resource type - Journals
ISSN - 2307-9010
DOI - 10.14419/ijpr.v5i1.7013
Subject(s) - debye model , selenide , transverse plane , debye , materials science , sound pressure , chemistry , condensed matter physics , physics , acoustics , structural engineering , selenium , engineering , metallurgy
The mechanical behavior, sound velocities and Debye temperature of beryllium-selenide (BeSe) semiconductor under pressure up to 50 GPa have been estimated using the structural parameters and elastic constants of Fanjie Kong and Gang Jiang (Physica B 404 (2009) 3935-3940). The Pugh ratio, the directional dependence of elastic wave velocity, the longitudinal, transverse and average sound velocities, and the Debye temperature are successfully predicted and analyzed in comparison with the available theoretical data. The analysis of the Pugh ratio indicates that this compound is prone to brittle behavior. Our obtained results of the longitudinal, transverse and average sound velocities at high pressure indicate that these of Kong and Jiang (Physica B 404 (2009) 3935-3940) are not correctly predicted.