Structural Electronic and Optical Properties of MgO, CaO and SrO Binary Compounds: Comparison Study

Abstract:

First-principles calculations for electronic and optical properties under pressure effect of MgO, SrO and CaO compounds in the cubic structure, using a full relativistic version of the full-potential augmented plane-wave (FP-LAPW) method based on density functional theory, within the local density approximation (LDA) and the generalized gradient approximation (GGA), have been reported. Furthermore, band structure calculations have been investigated by the alternative form of GGA proposed by Engel and Vosko (GGA-EV) and modified by Becke-Johnson exchange correlation potential (MBJ-GGA). All calculated equilibrium lattices, bulk modulus and band gap at zero pressure are find in good agreement with the available reported data. The pressure dependence of band gap and the static optical dielectric constant are also investigated in this work.

• Periodical: Solid State Phenomena (Volume 257)
• Pages: 123-126
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.257.123
• Online since: October 2016
• Authors: Salima Labidi, Jazia Zeroual, Malika Labidi*, Kalthoum Klaa, Rachid Bensalem
• Keywords: Alkaline Earth Oxides, Band-Gap, DFT, Fp-LAPW

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