The polarizability model for ferroelectricity in perovskite oxides

Abstract

This article reviews the polarizability model and its applications to ferroelectric perovskite oxides. The motivation for the introduction of the model is discussed and nonlinear oxygen ion polarizability effects and their lattice dynamical implementation outlined. While a large part of this work is dedicated to results obtained within the self-consistent-phonon approximation (SPA), also nonlinear solutions of the model are handled which are of interest to the physics of relaxor ferroelectrics, domain wall motions, incommensurate phase transitions. The main emphasis is to compare the results of the model with experimental data and to predict novel phenomena.

55 pages, 35 figures

References in corpus (4)

• A reassessment of the Burns temperature and its relationship to the diffuse scattering, lattice dynamics, and thermal expansion in the relaxor PMN
• Analogies of structural instabilities in EuTiO3 and SrTiO3
• Lattice dynamical analogies and differences between SrTiO3 and EuTiO3 revealed by phonon-dispersion relations and double-well potentials
• Dielectric relaxation and polar phonon softening in relaxor ferroelectric PbMg_(1/3)Ta_(2/3)O_3

Cited by in corpus (7)

• First-principles studies of multiferroic and magnetoelectric materials
• Spin-lattice coupling induced weak dynamical magnetism in EuTiO_3 at high temperatures
• Low temperature Terahertz Spectroscopy of LaFeO${}_3$, PrFeO${}_3$, ErFeO${}_3$, and LuFeO${}_3$: Quasimagnon resonances and ground multiplet transitions
• Ferroelectric phase transition and crystal asymmetry monitoring of $SrTi{O}_3$ using quasi $T{E}_{m,1,1}$ and quasi $T{M}_{m,1,1}$ modes
• Far- and Mid-infrared Emission and Reflectivity of Orthorhombic and Cubic ErMnO3: polarons and bipolarons
• Oxygen Isotope Effects on Lattice Properties of La_{2-x}Ba_xCuO_4 (x = 1/8)
• Spin-phonon interactions revisited: Far-infrared emission, Raman scattering, and high-resolution x-ray diffraction at the Néel temperature in LaFeO3