Thermally stimulated current and dielectric relaxation of inorganic/organic ferroelectric nanocomposites

Author

Capsal, Jean-Fabien ; Dantras, Eric ; Dandurand, Jany ; Lacabanne, Colette

Author_Institution

Lab. de Phys. des Polymeres, Inst. Carnot CIRIMAT, Toulouse

fYear

2008

fDate

15-17 Sept. 2008

Abstract

PA11/BaTiO₃ nanocomposites were elaborated with various particles size. These samples were poled under low field to elaborate poled ceramic/unpoled polymer composite. We found that the piezoelectric coefficient is highly poling temperature and poling time dependent. By poling the samples above the glass transition of the matrix, the piezoelectric coefficient of the composite were performed. The maximum piezoelectric coefficient measured was 5 pC/N for a PA 11/BaTiO₃ 700nm with phi = 0.4 poled under low field (3.3 kV/mm). It is higher than the piezoelectric coefficient of a stretched PA11 poled under high field (100 kV/mm).

Keywords

barium compounds; dielectric polarisation; dielectric relaxation; ferroelectric ceramics; glass transition; nanocomposites; particle size; piezoelectricity; polymers; thermally stimulated currents; BaTiO₃; PA11-BaTiO₃ nanocomposites; dielectric relaxation; glass transition; inorganic-organic ferroelectric nanocomposites; particle size; piezoelectric coefficient; poled ceramic-unpoled polymer composites; poling temperature; thermally stimulated current; Dielectric measurements; Ferroelectric materials; Nanocomposites; Petroleum; Piezoelectric films; Piezoelectric polarization; Polymers; Signal generators; Temperature; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 2008. ISE-13. 13th International Symposium on

Conference_Location

Tokyo

Print_ISBN

978-1-4244-1850-3

Electronic_ISBN

978-1-4244-1851-0

Type

conf

DOI

10.1109/ISE.2008.4814096

Filename

4814096