Electrostriction mechanism in electron-irradiated ferroelectric copolymer: a frequency response model

Author

DeReggi, A.S. ; Balizer, E. ; Neumann, D.A. ; Bateman, F.

Author_Institution

Polymer Div., Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA

Volume

1

fYear

2000

fDate

2000

Firstpage

191

Abstract

We are investigating the physical mechanism behind the large electrostriction in the electron-irradiated copolymer of vinylidene fluoride and trifluoroethylene (mass ratio 1/1). We report on a time-resolved measurement of the thickness change that follows the application of a voltage step. This change is detected by monitoring deviations of a laser beam reflected from the electroded sample surface. We observe a prompt initial response that then decays with a relaxation time of 1 s. A model is proposed involving mobile charges that screen changes of the internal field

Keywords

electron beam effects; electrostriction; ferroelectric materials; frequency response; polymer blends; electroded sample surface; electron irradiation; electrostriction mechanism; ferroelectric copolymer; frequency response model; internal field; mobile charges; relaxation time; thickness change; time-resolved measurement; trifluoroethylene; vinylidene fluoride; voltage step; Electrostriction; Ferroelectric materials; Laser beams; Laser modes; Laser theory; Laser transitions; Monitoring; Surface emitting lasers; Thickness measurement; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on

Conference_Location

Victoria, BC

Print_ISBN

0-7803-6413-9

Type

conf

DOI

10.1109/CEIDP.2000.885259

Filename

885259