Influence of interface intermixing and periodicity on internal electric field and polarization in ferroelectric superlattices

Chew, Khian Hooi and Iwata, M. and Lim, K.G. and Ong, L.H. (2013) Influence of interface intermixing and periodicity on internal electric field and polarization in ferroelectric superlattices. Ceramics International, 39. S301-S305. ISSN 0272-8842, DOI https://doi.org/10.1016/j.ceramint.2012.10.082.

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Abstract

A thermodynamic model is developed to study the effect of interface intermixing and modulation period on the internal electric field of a superlattice comprising alternate layers of ferroelectric and dielectric. The intermixed layer plays an important role in determining both the polarization and internal electric field modulation profiles of the superlattice. The presence of interface intermixed layer gives rise to inhomogeneous internal field and polarization, which enhances the depolarization field of the superlattices. Interface intermixing; however, does not have much influence on the polarization behavior of the superlattice. Ferroelectric volume fraction or thickness ratio of ferroelectric to dielectric is one of the key parameter for controlling the properties of a superlattice consisting alternate layers of ferroelectric and dielectric. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Item Type: Article
Funders: UNSPECIFIED
Additional Information: Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Interfaces, Ferroelectric properties, Superlattices, Artificial superlattices, Thin-films, Deposition, Bilayers
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: Miss Malisa Diana
Date Deposited: 29 Jul 2013 00:40
Last Modified: 27 Aug 2019 07:43
URI: http://eprints.um.edu.my/id/eprint/8243

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