Theory of phase transitions in second-order ferroelectric films: effects of surfaces and surface-induced stresses on polarization

Chew, Khian Hooi and Tilley, D.R. and Wang, C.L. and Shin, F.G. and Chan, H.L.W. (2002) Theory of phase transitions in second-order ferroelectric films: effects of surfaces and surface-induced stresses on polarization. Solid State Communications, 123 (10). pp. 457-462. ISSN 0038-1098

Full text not available from this repository. (Request a copy)
Official URL: http://www.sciencedirect.com/science/article/pii/S...

Abstract

The Landau-Devonshire theory is used to study the inter-relationship between polarization and stress in a second-order ferroelectric thin film, where both polarization and stress are in-plane. The intrinsic effects of surfaces and surface-induced stresses on polarization are considered by the introduction of extrapolation lengths in the formulation. Numerical calculations are made for a freestanding ferroelectric film, which is symmetric with respect to mid plane. The study is performed under the assumption that the polarization is enhanced or suppressed near the film surface. For a film with polarization enhanced near the surface, it is assumed that the surface tends to expand thus inducing a surface-tensile stress ('tensile' surface). Surface-induced compressive stress is assumed to exhibit in surface with polarization suppressed near surface ('compressive' surface) It is shown that a diminishing film size (thickness) has a strong influence on polarization and stress. (C) 2002 Elsevier Science Ltd. All rights reserved.

Item Type: Article
Additional Information: Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Ferroelectrics; Thin Films; Phase Transitions
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Depositing User: Miss Malisa Diana
Date Deposited: 16 Aug 2013 02:04
Last Modified: 27 Aug 2019 07:29
URI: http://eprints.um.edu.my/id/eprint/8203

Actions (login required)

View Item View Item