Title :
Dielectric behavior of 0-3 type piezoelectric composites
Author :
Hilczer, Botena ; Kulek, Jan ; Wolak, Jacek
Author_Institution :
Inst. of Molecular Phys., Polish Acad. of Sci., Poznan, Poland
Abstract :
Dielectric absorption and thermally stimulated current measurements were performed for PPN-P(VDF/TFE) (polyvinylidene fluoride/tetrafluoroethylene) composites obtained by hot-pressing of PPN ceramic and PVDF powder. Dielectric dispersion was observed in the composites with the maximum of absorption in the range of ~10 MHz at room temperature. The dispersion is characterized by a broad relaxation-time distribution. Electrical transport in the composite at temperatures below ~370 K is influenced by relaxation processes of the polymer
Keywords :
composite materials; dielectric relaxation; electrets; permittivity; piezoelectric materials; polymers; thermally stimulated currents; 10 MHz; 20 degC; 370 K; PPN ceramic; PPN-P(VDF/TFE; PVDF powder; broad relaxation-time distribution; dielectric absorption; dielectric dispersion; electret; hot-pressing; piezoelectric composites; polyvinylidene fluoride/tetrafluoroethylene; thermally stimulated current; Absorption; Ceramics; Composite materials; Current measurement; Dielectric loss measurement; Performance evaluation; Physics; Polymer films; Powders; Temperature;
Conference_Titel :
Electrets, 1991. (ISE 7) Proceedings., 7th International Symposium on (Cat. No.91CH3029-6)
Conference_Location :
Berlin
Print_ISBN :
0-7803-0112-9
DOI :
10.1109/ISE.1991.167246
