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Titre: Elastic properties and bonding of the AgGaSe2 chalcopyrite
Auteur(s): Ouahrani, Tarik
Otero De La Roza, Alberto
Reshak, AH
Khenata, R
Faraoun, HI
Amrani, B
Mebrouki, M
Luana, Victor
Mots-clés: FPLAPW calculations
Elastic properties
Quantum theory of atoms in molecules
Chemical bonding in semiconductors
Date de publication: 1-sep-2010
Editeur: University of Tlemcen
Résumé: Full-potential linearized augmented plane waves (FPLAPW) calculations have been used to determine the equilibrium properties and elastic constants of the chalcopyrite phase of AgGaSe2. The topological analysis of the electron density shows a clear polar bonding, with the integrated basin charges revealing a clear dominance of the covalent over the ionic character. The bonding analysis also provides a partition of the bulk modulus and compressibility into atomic contributions. Se is seen to dominate the global behavior (B=51.2 GPa), with a local bulk modulus intermediate between the values of the other two atoms: 44.8 (Ga), 51.1 (Se), and 56.6 GPa (Ag).
Description: Physica B: Condensed Matter, ISSN : 0921-4526, DOI : 10.1016/j.physb.2010.05.061, Issue : 17, Volume : 405, pp. 3658–3664, 1 September 2010.
ISSN: 0921-4526
Collection(s) :Articles internationaux

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