Ferroelectric Properties of Langmuir-Blodgett Copolymer Films at the Nanoscale

Abstract

Langmuir-Blodgett (LB) films are well known structures prepared as a result of successive transfer of monolayers (ML) from the gas-liquid interface onto solid substrates. One impressive possibility of LB method is the opportunity to vary the thickness of the film to an accuracy of one transfer, which could coincide with one ML. The ferroelectric properties of a copolymer of vinylidene fluoride and trifluorethylene P[VDF-TrFE] prepared by LB deposition are investigated in the region of a few monolayers.

Keywords:

• Ferroelectric polymer
• critical thickness of ferroelectric film

Acknowledgments

This work was supported in part by INTAS program, grant No 1000008-8091 and by the Russian Foundation for Basic Research, grant No 05-02-16871. Work at the University of Nebraska was supported by the Nebraska Research Initiative.