期刊
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
卷 69, 期 11, 页码 2924-2927出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2008.08.012
关键词
Chalcogenides; Ab initio calculations; Elastic properties; Phonons
资金
- TUBITAK (The Scientific Technological Research Council of Turkey) through TR-Grid e-Infrastructure Project
- TIBITAK [2218]
In this study, ab initio calculation results of the vibrational properties and elastic parameters as well as characteristic Debye temperature and Poisson's ratios of two barium chalcogenides, BaSe and BaS, which crystallize in NaCl-type Structure, were presented. Calculations were based on plane wave basis sets together with ultrasoft pseudopotentials in the framework of density functional theory (DFT) with generalized gradient approximation. Phonon dispersion spectra were obtained using the first principles linear response approach of the density functional perturbation theory (DFPT). The detailed total energy calculations were performed in order to obtain elastic constants using distortions on cubic phase. The calculated Structural, elastic, and thermal parameters of BaSe and BaS systems agree well with the available experimental data and theoretical calculations. (C) 2008 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据