High Qm Lead Free Sodium Potassium Niobate Piezoelectric Ceramics and Middle Frequency Resonator

Author

Chen, Qiang ; Chen, Lin ; Li, Qishou ; Shi, Xiaoluo ; Liu, Zhiqian ; Yue, Xi ; Xiao, Dingquan ; Zhu, Jianguo

Author_Institution

Sichuan Univ., Chengdu

fYear

2007

fDate

27-31 May 2007

Firstpage

651

Lastpage

653

Abstract

Density K₄CuNb₈O₂₃ modified (Na_0.5K_0.5)NbO₃ (NKN:KCN) ceramics with high mechanical quality factor Q_m were synthesized by using conventional mixing oxide process. The maximum value of Q_m of NKN:KCN ceramics reaches up to 1150, the planar electromechanical coefficient k_p of NKN:KCN ceramics maintains a relative high level, which is about 40%. Moreover, the Curie temperature of NKN:KCN ceramics is above 380 . Based upon this kind of lead-free piezoelectric ceramics, a new type of lead-free middle frequency (455 kHz) ceramic resonators were designed and produced. This kind of lead-free ceramic resonator can be used in the remote controller.

Keywords

Curie temperature; Q-factor; copper compounds; dielectric resonators; piezoceramics; piezoelectricity; potassium compounds; sodium compounds; (Na_0.5K_0.5)NbO₃:K₄CuNb₈O₂₃; Curie temperature; ceramic resonators design; conventional mixing oxide process; frequency 455 kHz; lead free sodium potassium niobate piezoelectric ceramics; mechanical quality factor; middle frequency resonator; planar electromechanical coefficient; remote controller; Ceramics; Environmentally friendly manufacturing techniques; Lead; Niobium compounds; Piezoelectric materials; Powders; Q factor; Resonance; Resonant frequency; Resonator filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on

Conference_Location

Nara

ISSN

1099-4734

Print_ISBN

978-1-4244-1334-8

Electronic_ISBN

1099-4734

Type

conf

DOI

10.1109/ISAF.2007.4393359

Filename

4393359