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Effects of Fe2O3 addition on microstructure and piezoelectric properties of 0.2PZN–0.8PZT ceramics

Published online by Cambridge University Press:  03 March 2011

Man-Kang Zhu ,
Peng-Xian Lu ,
Yu-Dong Hou ,
Hao Wang  and
Hui Yan
Man-Kang Zhu
Affiliation:
Materials Science and Engineer Institution, Beijing University of Technology,Beijing 100022, People’s Republic of China
Peng-Xian Lu
Affiliation:
Materials Science and Engineer Institution, Beijing University of Technology,Beijing 100022, People’s Republic of China
Yu-Dong Hou*
Affiliation:
Materials Science and Engineer Institution, Beijing University of Technology,Beijing 100022, People’s Republic of China
Hao Wang
Affiliation:
Materials Science and Engineer Institution, Beijing University of Technology,Beijing 100022, People’s Republic of China
Hui Yan*
Affiliation:
Materials Science and Engineer Institution, Beijing University of Technology,Beijing 100022, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: ydhou@bjut.edu.cn
a)Address all correspondence to this author. e-mail: ydhou@bjut.edu.cn
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Abstract

In this work, the effect of Fe2O3 addition on the microstructure and piezoelectric properties of Pb(Zn1/3Nb2/3)0.2Ti0.4Zr0.4O3 (0.2PZN–0.8PZT) ceramics were investigated. The studies indicated that the solution limit of Fe2O3 in the lattice of perovskite structure was about 0.1 wt%. Phase analysis shows that small addition of doping Fe2O3 results in the phase evolution from rhombohedral to tetragonal, sharp decrease of the Curie temperature, and remarkable increase of the grain size. Meanwhile, Fe2O3 addition within the solution limit led to the increase of the εr, kp, and d33. It is believed that the variation in the dielectric and piezoelectric properties are closely related to the microstructure change, phase evolution, and tetragonal distortion as Fe2O3 added.

Keywords

CeramicMicrostructurePiezoresponse
Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 10 , October 2005 , pp. 2670 - 2675
Copyright
Copyright © Materials Research Society 2005

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