Title :
Piezoelectric and dielectric properties of Pb(Ni13/Nb23/)O3 -Pb(Mn13/Nb23/)O3-Pb(Zr,Ti)O3 ceramics for piezoelectric transformer
Author :
Hwang, S.M. ; Yoo, J.H. ; Hwang, L.H. ; Hong, J.I. ; Ryu, S.R. ; Lee, S.I. ; Lee, M.S.
Author_Institution :
Dept. of Electr. Eng, Semyung Univ., Chungbuk, South Korea
fDate :
28 May-1 June 2002
Abstract :
In this study, the structural, dielectric and piezoelectric properties of Pb[(Ni13/Nb23/)x - (Mn13/Nb23/)0.09-x (Zr0.505Ti0.495)0.91]O3 (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05) system ceramics were investigated to develop the composition for piezoelectric transformers. All the specimens were sintered at 1250°C and their physical properties were measured, and the results are as follows; With increasing PNN substitution for PMN-PZT system, the dielectric constant was increased and the electro-mechanical coupling factor (kp) was increased to 0.62 at 5 mol% while the mechanical quality factor (Qm) decreased.
Keywords :
ferroelectric Curie temperature; lead compounds; permittivity; piezoceramics; piezoelectric devices; sintering; transformers; 1250 degC; LCD backlight inverter; PMN-PZT system; PNN substitution; Pb(Ni13/Nb23/)O3-Pb(Mn13/Nb23/)O3-Pb(Zr,Ti)O3 ceramics; PbNiO3NbO3-PbMnO3NbO3-PbZrO3TiO3; composition; dielectric constant; dielectric properties; electro-mechanical coupling factor; mechanical quality factor; piezoelectric properties; piezoelectric transformer; structural properties; Ceramics; Dielectrics; Fluorescent lamps; Niobium; Personal digital assistants; Piezoelectric devices; Powders; Power generation; Q factor; Temperature;
Conference_Titel :
Applications of Ferroelectrics, 2002. ISAF 2002. Proceedings of the 13th IEEE International Symposium on
Print_ISBN :
0-7803-7414-2
DOI :
10.1109/ISAF.2002.1195945
