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Influence of Sintering Temperatures on the Properties of Lithium Sodium Potassium Niobate Piezoelectric Ceramics

Published online by Cambridge University Press:  01 February 2011

Qiang Chen
Affiliation:
[email protected], Sichuan University, Department of Materials Science, Wangjiang Road 29, Chengdu, Sichuan Province, 610064, China, People's Republic of, 86-28-85412415, 86-28-85460353
Dejun Lan
Affiliation:
[email protected], Sichuan University, College of Materials Science & Engineering, China, People's Republic of
Yi Chen
Affiliation:
[email protected], Sichuan University, College of Materials Science & Engineering, China, People's Republic of
Zhuo Xu
Affiliation:
[email protected], Xi'an Jiaotong University, Electronic Materials Research Laboratory, China, People's Republic of
Xi Yue
Affiliation:
[email protected], Sichuan University, College of Materials Science & Engineering, China, People's Republic of
Dingquan Xiao
Affiliation:
[email protected], Sichuan University, College of Materials Science & Engineering, China, People's Republic of
Jianguo Zhu*
Affiliation:
[email protected], Sichuan University, College of Materials Science & Engineering, China, People's Republic of
*
*Corresponding author: e-mail:[email protected], Tel/Fax:86-28-85412415/86-28-85460353
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Abstract

Lithium sodium potassium niobate (Li, Na, K)NbO3 (LNKN) piezoelectric ceramics were prepared by using conventional solid state process. The phase structures of LNKN ceramics were characterized by x-ray diffraction (XRD). The dielectric properties of LNKN ceramics have been also studied at different temperature and frequency. It was found that LNKN ceramics have high Curie temperature T c(about 460°C), and relatively high piezoelectric constant d 33 (∼200pC/N) and high electromechanical coupling coefficient k p(∼0.40). Both of the piezoelectric constant d 33 and electromechanical coupling coefficient k p of LNKN ceramics decreased with the increasing of sintering temperature. The piezoelectric property dependence of composition of LNKN ceramics has also been studied.

Type
Research Article
Copyright
Copyright © Materials Research Society 2006

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