Research Papers in Physics and Astronomy

 

Date of this Version

3-2013

Citation

Published in Crystallography Reports 58:2 (March 2013), pp. 338-343; doi: 10.1134/S1063774513020090

Comments

Copyright © 2013 Springer Verlag. Used by permission. Original Russian text © 2013 R. V. Gaynutdinov, O. A. Lysova, A. L. Tolstikhina, V. M. Fridkin, S. G. Yudin, S. Ducharme, published in Kristallografiya 58:2 (2013), pp. 321–326.

Abstract

The growth of nanocrystals obtained from Langmuir-Blodgett films of ferroelectric copolymer consisting of 70% vinylidene fluoride and 30% trifluoroethylene has been investigated by atomic force microscopy (AFM). The radius and concentration of nanocrystals are found to depend on the annealing time of the film. A model for nanocrystal growth is proposed which yields adequate time dependences for nanocrystal size parameters. The switching kinetics of individual ferroelectric nanocrystals with an average diameter of 100–200 nm and a height of 15–20 nm has been investigated in the piezoelectric response mode. It is shown that the switching of nanocrystals has an activation character.