High pressure study of structural and electronic properties of magnesium telluride |
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| Authors: | D Rached M Rabah N Benkhettou M Maachou |
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| Institution: | a Applied Materials Laboratory, Physics Department, Research Centre (ex CFTE), route de Mascara, University of Djillali Liabès, Sidi Bel-Abbès 22000, Algeria
b Laboratoire de Physique Quantique et de Modélisation Mathématique de la Matière (LPQ3M), Département de Technologie, Université de Mascara, 29000, Algeria |
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| Abstract: | The full-potential linear muffin-tin orbital method (FP-LMTO) within the local density approximation (LDA) is used to calculate the electronic band structures and the total energies of MgTe in its stable (NiAs-B8) and high pressure phases. The latter provide us with the ground state properties such us lattice parameter, bulk modulus and its pressure derivatives. The transition pressure at which this compound undergoes the structural phase transition from the NiAs to CsCl phase is calculated. The energy band gaps and their volume and pressure dependence in the stable NiAs-B8 phase are investigated. The ground state properties, the transition pressure are found to agree with the experimental and other theoretical results. The elastic constants at equilibrium in both NiAs and CsCl structure are also determined. |
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| Keywords: | C High pressure D Electronic structure |
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