Enhancement of piezoelectric activity in P(VDF-TrFE) copolymer using two-step poling

Author

Chan, H.L.W. ; Zhao, Z. ; Kwok, K.W. ; Choy, C.L.

Author_Institution

Dept. of Appl. Phys., Hong Kong Polytech., Kowloon, Hong Kong

fYear

1994

fDate

7-9 Sep 1994

Firstpage

583

Lastpage

588

Abstract

The piezoelectric property of thick P(VDF-TrFE) copolymer films could be enhanced by a two-step thermal poling method. Two weak resonance peaks were observed after the first poling, while only a single strong resonance was found after the two-step poling process. To study the mechanisms of the polarization process, X-ray diffraction (XRD) and differential scanning calorimetry (DSC) were used. The results were reported

Keywords

X-ray diffraction; dielectric polarisation; electrets; ferroelectric materials; organic insulating materials; piezoelectric materials; piezoelectric thin films; polymer blends; polymer films; thermal analysis; thermally stimulated currents; P(VDF-TrFE) copolymer; X-ray diffraction; differential scanning calorimetry; piezoelectric activity; polarization process; single strong resonance; two-step poling; two-step thermal poling method; weak resonance peaks; Annealing; Ceramics; Heat treatment; Piezoelectric films; Piezoelectric materials; Piezoelectric transducers; Resonance; Temperature; X-ray diffraction; X-ray scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1994. (ISE 8), 8th International Symposium on

Conference_Location

Paris

Print_ISBN

0-7803-1940-0

Type

conf

DOI

10.1109/ISE.1994.514834

Filename

514834