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- W2030747338 abstract "Structural, electronic and thermodynamic properties of SrTe and BaTe compounds and their ternary mixed crystals BaxSr1−xTe in the rock-salt structure have been studied with density functional theory (DFT), whereas the optical properties have been obtained by using empirical methods such as the modified Moss relation. The exchange-correlation potential was calculated using the generalized gradient approximation (GGA) of Perdew–Burke–Ernzerhof (PBE) and the local density approximation (LDA) of Teter–Pade (TP). In the present work, we used the virtual-crystal approximation (VCA) to study the effect of composition (x). The calculated lattice parameters at equilibrium volume and the bulk modulus for x=0 and x=1 are in good agreement with the literature data. Furthermore, the BaxSr1−xTe alloys are found to be an indirect band gap semiconductor. In addition, we have also predicted the heat capacities (CV), the entropy(S), the internal energy (U) and the Helmholtz free energy (F) of the parent compounds SrTe and BaTe." @default.
- W2030747338 created "2016-06-24" @default.
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- W2030747338 date "2014-03-01" @default.
- W2030747338 modified "2023-09-26" @default.
- W2030747338 title "Ab initio calculations of structural, electronic, optical and thermodynamic properties of alkaline earth tellurides BaxSr1−XTe" @default.
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- W2030747338 doi "https://doi.org/10.1016/j.jpcs.2013.11.014" @default.
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