Exact expressions for dielectric susceptibilities in the paraelectric phase of ferroelectric superlattices based on the ginzburg-landau theory
Document Type
Article
Publication Date
1-1-2008
Abstract
Exact expressions for the polarization profiles induced by an external electric field and the dielectric susceptibilities in the paraelectric phase were obtained for a one-dimensional ferroelectric superlattice on the basis of the Ginzburg-Landau theory. The superlattice is composed of a ferroelectric of thickness L1 and a paraelectric of thickness L2, which couple each other through the polarization at their interfaces. Our analytical results revealed that the profile of polarizations induced by the electric field in the paraelectric phase may be considered to approximately represent the soft mode.
Keywords
Dielectric susceptibility, Ferroelectrics, Superlattice, Phase transition, Ginzburg-landau theory, Epitaxial batio3/srtio3 superlattices, Polarization enhancement
Divisions
PHYSICS
Publication Title
Integrated Ferroelectrics
Volume
100
Additional Information
Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA