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High Stability of Dielectric Permittivity for Pb(Mg1/3Nb2/3)O3-Based Composite Ceramics Prepared by Coating Method

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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.

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Periodical:

Materials Science Forum (Volume 687)

Pages:

450-456

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.687.450

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Online since:

June 2011

Authors:

Jing Bo Zhao, Hong Liang Du, Shao Bo Qu, Hong Mei Zhang, Zhuo Xu

Keywords:

Composite Ceramic, Dielectric Permittivity, PMN, Temperature Stability

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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