Structural, elastic, electronic, phonon and thermal properties ofIr3Ta and Rh3Ta alloys
      
Yazarlar (4)
N. Arikan
Kırşehir Ahi Evran Üniversitesi, Türkiye
Prof. Dr. Osman ÖRNEK Kırşehir Ahi Evran Üniversitesi, Türkiye
Uʇur
Gazi Üniversitesi, Türkiye
G. Uʇur
Gazi Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Philosophical Magazine Letters (Q4)
Dergi ISSN 0950-0839 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 07-2015
Cilt / Sayı / Sayfa 95 / 7 / 392–400 DOI 10.1080/09500839.2015.1076175
Makale Linki http://www.tandfonline.com/doi/full/10.1080/09500839.2015.1076175
Özet
We have studied the structural, elastic, electronic, phonon and thermodynamic properties of Ir3Ta and Rh3Ta alloys, using ab initio calculations. For the L12 phase, we report the calculated lattice constants, bulk modulus and elastic constants, and these values are compared with previously published values. We also derive the elastic constants from the values of the slopes of the acoustic branches in the phonon dispersion curves. The band structures show that both materials are metallic. The phonon dispersion curves, and their corresponding total and projected densities of states, are obtained using a linear response in the framework of the density functional perturbation theory. The specific heat capacity at constant volume and different temperatures is calculated, and this aspect is discussed using the quasi-harmonic approximation.
Anahtar Kelimeler
ab initio | band calculations | density-functional theory | electronic density of states | electronic structure | first-principles calculations | phonons