Etude des proprietés structurales , élastiques et électronique de CuS et CuTe par la méthode FP-LMTO

Type : Article de conférence
Auteur(s) :  A.Boulegane, A.Mokeddem2
Année :  2016
Domaine : Physique
Conférence: 7th African Conference on Non Destructive Testing (ACNDT) & the 5th International Conference on NDT and Materials Industry and Alloys (IC-WNDT-MI)
Lieu de la conférence:  Oran, Algeria
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF :  (.pdf)
Mots clés :  CuS, FP-LMTO, electronic properties, elastic proprieties

Résumé : 

The aim of this work is to study the structural ,electronic and elastic properties of CuS. for this, we use the full-potential linear muffin-tin orbital (FP-LMTO) method in the framework of density-functional theory (DFT). The exchange and correlation energy is described in the generalized gradient approximation (GGA ) using Perdew-Wang parameterization. We have investigated the effect of composition on structural properties such as lattice constants, bulk modulus and band gap. We report the results concerning the variation of thegaps and crossover of the direct, indirect band gap and bowing .Finally, a reasonable agreement is found from the comparison of our results with other theoretical calculations.