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

Document Type

Article

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.