Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/15048
Title: Effective Landau-Devonshire-type theory of phase transitions in ferroelectric thin films based on the Tilley-Zeks model
Authors: Chew, KH
Ishibashi, Y
Shin, FG
Chan, HLW 
Keywords: Ferroelectricity
Phase transitions
Thin films
Issue Date: 2003
Source: Journal of the Physical Society of Japan, 2003, v. 72, no. 11, p. 2972-2978 How to cite?
Journal: Journal of the Physical Society of Japan 
Abstract: A generalized thermodynamic theory (effective Landau-Devonshire-type theory) for ferroelectric thin films undergoing second order phase transition is developed within the framework of the Landau-Ginzburg theory via the concept of extrapolation length δ in the Tilley-Zeks model. The free energy of the Tilley-Zeks model for ferroelectric thin films is cast into a clearer and simpler form from the usual integral expression form using suitable order parameters. The target coefficients A and B for the second order and fourth order terms, respectively, of the free energy are expressed as a function of temperature, film thickness, extrapolation length and other physical parameters. The intrinsic effects of surface on the order of phase transitions are discussed analytically with an emphasis on asymmetric films.
URI: http://hdl.handle.net/10397/15048
ISSN: 0031-9015
DOI: 10.1143/JPSJ.72.2972
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