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Ferroelectrics Volume 400, 2010 - Issue 1
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POLYMERS

Dielectric Relaxation in Polymer Ferroelectric Nanostructures

K. A. Verkhovskaya Institute of Crystallography RAS, Moscow, 119333, Leninsky pr. 59, Russia
,
A. A. Plakseev Institute of Crystallography RAS, Moscow, 119333, Leninsky pr. 59, Russia
,
A. M. Lotonov Lomonosov Moscow State University, Moscow, Russia
,
N. D. Gavrilova Lomonosov Moscow State University, Moscow, Russia
&
S. G. Yudin Institute of Crystallography RAS, Moscow, 119333, Leninsky pr. 59, Russia
Pages 287-293 | Received 13 Oct 2009, Published online: 20 Nov 2010
 
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Abstract

The dielectric dispersion of ultrathin films and nanocrystals of the poly(vinylidene fluoride-trifluoroethylene) copolymer with the 70/30 composition has been studied. It has been found that the phase transition in ferroelectric nanocrystals takes place at T = 100°C. The observed broad temperature hysteresis indicates the occurrence of a first order phase transition.

Acknowledgments

We are grateful to V.M. Fridkin for helpful advice and discussions in the course of this work, also to R.V. Gaynutdinov and O.A. Lysova for AFM measurements. This study was supported by the Russian Foundation for Basic Research (project nos. 09-02-00096).

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