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An Ab-initio Study of Structural and Electronic Properties of CaTe under High Pressure      
Yazarlar
Doç. Dr. Cihan KÜRKÇÜ Doç. Dr. Cihan KÜRKÇÜ
Kırşehir Ahi Evran Üniversitesi, Türkiye
Özet
The crystal structure of the CaTe compound is studied up to 150 GPa under high hydrostatic pressure using the density functional theory (DFT) with the generalized gradient approximation (GGA). Pressure-volume relationships, structural transitions and electronic properties in CaTe compound are investigated using Siesta method. CaTe crystallizes in the NaCl-type (B1) structure (space group:) at ambient conditions, and transforms to CsCl-type (B2) structure (space group:) at high pressure. This transformation is based on a intermediate state with space group. Moreover, the electronic band structure of the B1 and B2 structures of CaTe have been calculated. According to this calculation, obtained band gap values are in good agreement with the values reported in the literature.
Anahtar Kelimeler
ab-initio | CaTe | intermediate state | phase transition
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
Dergi ISSN 0036-0244
Dergi Tarandığı Indeksler SCI-Exp, SCOPUS, CCR Database, Chemistry Server Reaction Center, Curation, Current Contents Physical Chemical & Earth Sciences, Essential Science Indicators, Reaction Citation Index, Reference Master, Sophia
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 11-2019
Cilt No 93
Sayı 11
Sayfalar 2226 / 2232
Doi Numarası 10.1134/S0036024419110165
Makale Linki http://link.springer.com/10.1134/S0036024419110165