Dynamics of the polarization growth in P(VDF-TrFE) copolymers

Author

Eberle, G. ; Bihler, E. ; Eisenmenger, W.

Author_Institution

Phys. Inst., Stuttgart Univ., Germany

fYear

1990

fDate

28-31 Oct 1990

Firstpage

41

Lastpage

46

Abstract

The formation of the dielectric displacement under an applied electric field and the remanent polarization after switching-off of the electric field is studied in P(VDF-TrFE) copolymers as a function of the duration of the electric poling field. A time delay is observed between the orientation of the dipoles and their stabilization, leading to remanent polarization. This time delay is reduced with increasing crystallinity of the films. The poling time necessary to saturate the remanent polarization is determined and found to be dependent on the poling field strength

Keywords

dielectric polarisation; polymer blends; P(VDF-TrFE) copolymers; crystallinity; dielectric displacement; electric poling field; polarization growth; poling time; remanent polarization; time delay; trifluoroethylene; vinylidene fluoride; Crystallization; Delay effects; Dielectric measurements; Ferroelectric materials; Piezoelectric films; Piezoelectric polarization; Pulse generation; Switches; Switching circuits; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1990. Annual Report., Conference on

Conference_Location

Pocono Manor, PA

Type

conf

DOI

10.1109/CEIDP.1990.201317

Filename

201317