img
img
High pressure elasticity and lattice dynamics of Mg2La from first principles       
Yazarlar (2)
Savaş Ağduk
Karabük Üniversitesi, Türkiye
Prof. Dr. Gökhan GÖKOĞLU Prof. Dr. Gökhan GÖKOĞLU
Karabük Üniversitesi, Türkiye
Devamını Göster
Özet
In this study, we present the results of first principles calculations of elastic constants and structural properties of the Mg 2La cubic Laves phase (C15) up to 150 GPa pressure together with vibrational properties at equilibrium geometry. projector augmented wave (PAW) potentials are used with generalized gradient approximation (GGA) scheme of the density functional theory. The linear response technique of the density functional perturbation theory is applied in investigation of the phonon dispersion spectra. The static equation of states of the system has been studied with Vinet formulation. The values of applied pressure have also been obtained from the Vinet formulation of equation of states. The cubic phase of the system remains stable within the studied pressure range. The elastic anisotropy ratio indicates an electronic topological transition (ETT) around 100 GPa. This situation is also confirmed by electronic band structures. © 2011 Elsevier B.V. All rights reserved.
Anahtar Kelimeler
Computer simulations | Elasticity | Intermetallics | Phonons
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı JOURNAL OF ALLOYS AND COMPOUNDS
Dergi ISSN 0925-8388 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 04-2012
Cilt No 520
Sayı 1
Sayfalar 93 / 97
Doi Numarası 10.1016/j.jallcom.2011.12.131
Makale Linki http://linkinghub.elsevier.com/retrieve/pii/S0925838811024157