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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 ,
Dejun Lan ,
Yi Chen ,
Zhuo Xu ,
Xi Yue ,
Dingquan Xiao  and
Jianguo Zhu
Qiang Chen
Affiliation:
nic0400@scu.edu.cn, 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:
nic0400@scu.edu.cn, Sichuan University, College of Materials Science & Engineering, China, People's Republic of
Yi Chen
Affiliation:
nic0400@scu.edu.cn, Sichuan University, College of Materials Science & Engineering, China, People's Republic of
Zhuo Xu
Affiliation:
zhuoxu@xjtu.edu.cn, Xi'an Jiaotong University, Electronic Materials Research Laboratory, China, People's Republic of
Xi Yue
Affiliation:
nic0400@scu.edu.cn, Sichuan University, College of Materials Science & Engineering, China, People's Republic of
Dingquan Xiao
Affiliation:
nic0402@scu.edu.cn, Sichuan University, College of Materials Science & Engineering, China, People's Republic of
Jianguo Zhu*
Affiliation:
nic0400@scu.edu.cn, Sichuan University, College of Materials Science & Engineering, China, People's Republic of
*
*Corresponding author: e-mail:nic0400@scu.edu.cn, 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 Tc(about 460°C), and relatively high piezoelectric constant d33 (∼200pC/N) and high electromechanical coupling coefficient kp(∼0.40). Both of the piezoelectric constant d33 and electromechanical coupling coefficient kp of LNKN ceramics decreased with the increasing of sintering temperature. The piezoelectric property dependence of composition of LNKN ceramics has also been studied.

Keywords

ferroelectricceramicpiezoelectric
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 888: Symposium V – Materials and Devices for Smart Systems II , 2005 , 0888-V09-11
Copyright
Copyright © Materials Research Society 2006

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References

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