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Investigation of structural, electronic, elastic and phonon properties of cubic spinel ZnM2O4(M = Co, Rh and Ir) compounds     
Yazarlar
Doç. Dr. Mustafa ÖZDURAN
Kırşehir Ahi Evran Üniversitesi, Türkiye
Özet
The results obtained from ab initio calculations on ZnM2O4 (M = Co, Rh and Ir) compounds have been reported. The elastic constants, Bulk, Shear and Young modulus, and Poisson's ratios of the compounds are presented. In addition, full phonon dispersion curves and projected density of states of the compounds have been computed using the direct method. The lattice parameters (a) and internal parameters (u) are found to be in a good agreement with experimental results. According to both the B/G values and the Poisson's ratio, these compounds have covalent bondings. The analysis of the band structure of these compounds have indicated indirect band gaps of 1.25 eV for ZnCo2O4 and 1.14 eV for ZnRh2O4 and 0.86 eV for ZnIr2O4. The full phonon spectra of these compounds show that they are dynamically stable in the cubic spinel structure.
Anahtar Kelimeler
DFT, Spinel oxides, Electronic band structure, Phonon dispersion, Elastic constants
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı CHINESE JOURNAL OF PHYSICS
Dergi ISSN 0577-9073
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 06-2019
Cilt No 59
Sayfalar 49 / 57
Doi Numarası 10.1016/j.cjph.2019.02.024
Makale Linki https://linkinghub.elsevier.com/retrieve/pii/S0577907318311468