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Recent Developments in Thermodynamic Theory of Ferroelectric Thin Films

Published online by Cambridge University Press:  26 February 2011

Nikolay Pertsev
Nikolay Pertsev*
Affiliation:
pertsev@IWE.RWTH-Aachen.de, Forschungszentrum Juelich, Institut fuer Festkoerperforschung, D-52425 Juelich, Juelich, N/A, N/A, Germany, +49-2461612994, +49-2461612550
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Abstract

The nonlinear thermodynamic theory of epitaxial ferroelectric films has predicted several important strain-induced phenomena, which have been already observed experimentally. This justifies further development of this theory aiming at the better understanding of the structure/property relationships in thin-film ferroelectrics. To that end, a number of new theoretical studies have been performed recently. First, the thermodynamic formalism has been extended to epitaxial films grown on dissimilar substrates inducing anisotropic strains and a shear deformation in the film plane. Second, the polarization states and dielectric properties were calculated for polydomain Pb(Zr1-xTix)O3 films deposited on cubic substrates. Third, the effect of depolarizing field on the physical properties of strained single-domain films sandwiched between continuous electrodes was described. The results of these studies will be discussed in this paper.

Keywords

ferroelectricityfilmphase transformation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 902: Symposium T – Ferroelectric Thin Films XIII , 2005 , 0902-T08-05
Copyright
Copyright © Materials Research Society 2006

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