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Calculations on switching characteristics of ferroelectric-paraelectric superlattices

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 le...

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Main Authors: Chew, Khian Hooi, Lee, T.Y., Ong, L.H.
Format: Article
Published: 2012
Subjects:
QC Physics
Online Access:http://eprints.um.edu.my/8239/
http://www.sciencedirect.com/science/article/pii/S027288421100263X
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spelling my.um.eprints.82392019-08-27T07:44:25Z http://eprints.um.edu.my/8239/ Calculations on switching characteristics of ferroelectric-paraelectric superlattices Chew, Khian Hooi Lee, T.Y. Ong, L.H. QC Physics 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. 2012 Article PeerReviewed 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 http://www.sciencedirect.com/science/article/pii/S027288421100263X 10.1016/j.ceramint.2011.04.036
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QC Physics
spellingShingle QC Physics
Chew, Khian Hooi
Lee, T.Y.
Ong, L.H.
Calculations on switching characteristics of ferroelectric-paraelectric superlattices
description 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.
format Article
author Chew, Khian Hooi
Lee, T.Y.
Ong, L.H.
author_facet Chew, Khian Hooi
Lee, T.Y.
Ong, L.H.
author_sort Chew, Khian Hooi
title Calculations on switching characteristics of ferroelectric-paraelectric superlattices
title_short Calculations on switching characteristics of ferroelectric-paraelectric superlattices
title_full Calculations on switching characteristics of ferroelectric-paraelectric superlattices
title_fullStr Calculations on switching characteristics of ferroelectric-paraelectric superlattices
title_full_unstemmed Calculations on switching characteristics of ferroelectric-paraelectric superlattices
title_sort calculations on switching characteristics of ferroelectric-paraelectric superlattices
publishDate 2012
url http://eprints.um.edu.my/8239/
http://www.sciencedirect.com/science/article/pii/S027288421100263X
_version_ 1643688255417221120
score 13.211869

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