A comprehensive study has been
carried out in order to reveal physical properties of antiperovskite compound
GeNCa3 in the cubic structure. This study presents extensive
properties including mechanical, electronic, vibrational and thermodynamical by
means of generalised approximation approach within the density functional
theory. The equilibrium lattice constant and bulk modulus of the compound are
obtained via energy-volume data. The mechanical stability evaluation is
conducted based on Born’s criteria using elastic constants. Subsequently,
electronic band structures and partial and total densities of states are computed
for antiperovskite GeNCa3. The electronic band structure of the
compound reveals a metallic character with highest contribution to the
conductivity Ge 4p and Ca 3d states. Moreover, phonon distribution curve is obtained
by employing the linear response technique. The results indicate a dynamically
stable compound. Finally, thermodynamic properties such as entropy and specific
heat value and the results are presented.
first principle calculations antiperovkites phonon elastic constants
Birincil Dil | İngilizce |
---|---|
Konular | Metroloji,Uygulamalı ve Endüstriyel Fizik |
Bölüm | Araştırma Makalesi |
Yazarlar | |
Yayımlanma Tarihi | 1 Ağustos 2019 |
Gönderilme Tarihi | 28 Kasım 2018 |
Kabul Tarihi | 26 Şubat 2019 |
Yayımlandığı Sayı | Yıl 2019 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.