THEORY OF ANISOTROPIC OXYGEN POLARIZABILITY IN THE TETRAGONAL PHASE OF BATIO3

Authors
KHATIB D BAMMOU K HAFID L BENSAMKA F
Citation
D. Khatib et al., THEORY OF ANISOTROPIC OXYGEN POLARIZABILITY IN THE TETRAGONAL PHASE OF BATIO3, Ferroelectrics. Letters section (Print), 24(1-2), 1998, pp. 49-54
Citations number
10
Categorie Soggetti
Physics, Condensed Matter
Journal title
Ferroelectrics. Letters section (Print) → ACNP
ISSN journal
07315171
Volume
24
Issue
1-2
Year of publication
1998
Pages
49 - 54
Database
ISI
SICI code
0731-5171(1998)24:1-2<49:TOAOPI>2.0.ZU;2-9
Abstract
Anisotropic oxygen polarizability in the tetragonal phase of BaTiO3 is discussed taking into account of dipole-dipole interaction due to the electronic polarization and the, lattice deformation. In this microsc opic model, we have assumed that the dominant source of the optical pr operties is the anisotropy of the oxygen polarizability, particularly the contribution of the oxygen O-2. It is found that the calculated re sults are in good agreement with the experimental data.