Calculations on switching characteristics of ferroelectric-paraelectric superlattices

Chew, Khian Hooi and Lee, T.Y. and Ong, L.H. (2012) Calculations on switching characteristics of ferroelectric-paraelectric superlattices. Ceramics International, 38. S3-S7. ISSN 0272-8842

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Abstract

We study the switching characteristics of a superlattice consisting of a periodic ferroelectric and paraelectric layer with interlayer coupling using the Landau - Khalatnikov equation. The inhomogeneity of polarization at the ferroelectric or paraelectric surface is described by the extrapolation length delta. The effects of various parameters such as the viscosity coefficient, layer thickness, interlayer coupling and temperature on the switching characteristics are investigated. Our study shows that the hysteresis loop and switching current versus applied field depend strongly on those parameters. Inter layer coupling increases the ferroelectricity of the superlattice, leading to a strong enhancement in polarization and coercive field. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Item Type: Article
Additional Information: Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Interfaces, Ferroelectric properties, Polarization switching, Superlattices, Batio3/srtio3 superlattices, Dielectric-properties, Films
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Depositing User: Miss Malisa Diana
Date Deposited: 29 Jul 2013 01:52
Last Modified: 27 Aug 2019 07:44
URI: http://eprints.um.edu.my/id/eprint/8239

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