Competition between the thickness effects of each constituent layer in ferroelectric superlattices
Document Type
Article
Publication Date
1-1-2007
Abstract
We have used a lattice model based on the Landau-Ginzburg theory to examine the ferroelectric properties of a strongly coupled superlattice consisting of alternating ferroelectric and paraelectric layers. The thickness effects of the ferroelectric and paraelectric layers on the polarization behaviors of the superlattice are examined in relation to the dielectric softness of the paraelectric layer. Our finding suggests that the properties of the superlattice do not arise just from the intrinsic property of the ferroelectric layer alone, but depends on the behavior of the paraelectric layers. The competition between the thickness effects from the ferroelectric and paraelectric layers is found to play an important role in determining the properties of a superlattice.
Keywords
Ferroelectric, Landau-ginzburg theory, Lattice model, Superlattice, Heterostructures
Divisions
PHYSICS
Publication Title
Ferroelectrics
Volume
357
Additional Information
Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA