High Stability of Dielectric Permittivity for Pb(Mg1/3Nb2/3)O3-Based Composite Ceramics Prepared by Coating Method
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Published:2011-06
Issue:
Volume:687
Page:450-456
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ISSN:1662-9752
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Container-title:Materials Science Forum
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language:
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Short-container-title:MSF
Author:
Zhao Jing Bo1,
Du Hong Liang2,
Qu Shao Bo1,
Zhang Hong Mei1,
Xu Zhuo3
Affiliation:
1. Air Force Engineering University
2. Northwestern Polytechnical University
3. Xi'an Jiaotong University
Abstract
To improve the temperature stability of PMN(Pb(Mg1/3Nb2/3)O3)-based ceramics, PMN-based composite ceramics were prepared by co-sintering two kinds of ceramics with different curie temperature. One unit is MHT(0.82PMN (Pb (Mg1/3Nb2/3) O3) -0.18PT (PbTiO3) (the curie temperature Tm=74°C)), and the other unit is MLT (0.88PMN (Pb (Mg1/3Nb2/3) O3)-0.12BT (BaTiO3) (the curie temperature Tm=-50°C)). The effects of the sintering temperature and the ratio of high and low Tm units on dielectric temperature stability were studied. The results show that the temperature stability can be improved greatly by co-sintering and coating method. The results show that PMN(Pb(Mg1/3Nb2/3)O3)-based composite ceramics are promising candidate for practical applications.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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