6533b830fe1ef96bd1297932
RESEARCH PRODUCT
Theory of spontaneous polarization and birefringence in the tetragonal phase of KNbO3
L. BougarfaWataru KinaseDriss KhatibL. LifsalB. Jannotsubject
Kerr effectPolarization rotatorMaterials scienceBirefringenceCondensed matter physicsPhysics::OpticsIonic bondingCondensed Matter PhysicsPolarization (waves)Electronic Optical and Magnetic MaterialsTetragonal crystal systemNuclear magnetic resonancePolarizabilityLocal fielddescription
Abstract The microscopic mechanism of optical anisotropy in the tetragonal phase of KNbO3 is discussed taking account of the dipole-dipole effect due to the ionic and electronic polarizations of the crystal and the spontaneous Kerr effect. The last effect is a cause of the strong local field acting on the constituent ions. For the spontaneous polarization we use only the first effect. It is found that the birefringence and the spontaneous polarization are in good agreement with the experimental data.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-04-01 | Ferroelectrics |