6533b85afe1ef96bd12b8af9
RESEARCH PRODUCT
Etude theorique de la dynamique du réseau de batio en phase quadratique
A. KhalalB. JannotD. Khatibsubject
Lattice dynamicsMineralogyThermodynamicsIonCondensed Matter::Materials Sciencechemistry.chemical_compoundchemistryPolarizabilityMolecular vibrationBarium titanatePhysics::Atomic and Molecular ClustersMaterials ChemistryCoulombPhysics::Atomic PhysicsAnisotropyDispersion (chemistry)description
Abstract The lattice dynamics of barium titanate BaTiO 3 is discussed quantitatively in the framework of a shell model taking into account the electronic polarizabilities of the constituent ions and including Coulomb and short-range interactions. The results of calculations point out the important role of the anisotropic oxygen polarizability. There is a good agreement between calculated and experimental dispersion curves.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-07-01 | Annales de Chimie Science des Matériaux |