Novel switching phenomena in ferroelectric Langmuir-Blodgett films

Authors

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

Date of this Version

12-25-1995

Comments

Published by American Institute of Physics. Applied Physics Letters, 67, 3975-3977 (1995). ©1995 American Institute of Physics. Permission to use. Journal home page = http://jap.aip.org/jap/.

Abstract

We have established ferroelectric switching and observed a novel conductance switching phenomenon in ferroelectric polymer films fabricated by the Langmuir–Blodgett technique. The films consist of 10–30 monolayers (ML) of a copolymer of vinylidene fluoride (70%) and trifluoroethylene (30%), exhibiting a first-order ferroelectric phase transition at 70 °C and nearly rectangular ferroelectric and conductance hysteresis at 24 °C. Ferroelectric switching is accompanied by switching of the conductance by three orders of magnitude. A model describing this switching phenomenon is proposed.