Piezoelectric and pyroelectric properties of ferroelectric Langmuir-Blodgett polymer films

Authors

A.V. Bune, University of Nebraska - Lincoln
Chuanxing Zhu, University of Nebraska - Lincoln
Stephen Ducharme, University of Nebraska - LincolnFollow
L.M. Blinov, Institute of Crystallography of the Russian Academy of Sciences, Moscow, Russia
V.M. Fridkin, Institute of Crystallography of the Russian Academy of Sciences, Moscow, Russia
S.P. Palto, Institute of Crystallography of the Russian Academy of Sciences, Moscow, Russia
N.N. Petukhova, Institute of Crystallography of the Russian Academy of Sciences, Moscow, Russia
S.G. Yudin, Institute of Crystallography of the Russian Academy of Sciences, Moscow, Russia

Date of this Version

6-1-1999

Comments

Published by American Institute of Physics. J. Applied Physics 85, 7869-7873 (1999). ©1999 American Institute of Physics. Permission to use. Journal home page = http://jap.aip.org/jap/.

Abstract

The piezoelectric and pyroelectric responses of ferroelectric Langmuir–Blodgett polymer films are less than the largest values measured with bulk films of the same composition. The films of the crystalline copolymer poly(vinylidene fluoride trifluoroethylene) fabricated by the Langmuir–Blodgett technique are 30 ML thick (15 nm) and are highly crystalline and oriented with polarization perpendicular to the film. Both piezoelectric and pyroelectric measurements show reversible ferroelectric switching. The films are suitable for use in pyroelectric infrared imaging and in piezoelectric acoustic transducers.