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Effect of B2O3 Glass on the Sintering and Microwave Dielectric Properties of MgTiO3–CaTiO3

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Abstract:

The effects of B2O3 additive on the microstructures, the phase formation and the microwave dielectric properties of MgTiO3–CaTiO3 ceramics were investigated. The sintering temperature of B2O3-doped 0.95MgTiO3–0.05CaTiO3 ceramics can be lowered to due to the liquid phase effect. Formation of second phase MgTi2O5 can be effectively restrained through the addition of B2O3. The microwave dielectric properties are found strongly correlated with the sintering temperature as well as the amount of B2O3 addition. At , 0.95MgTiO3–0.05CaTiO3 ceramics with 10 wt% B2O3 addition possesses a dielectric constant of 18.3, a Q×f value of 20,000 (at 7 GHz) and a value of −6.12 ppm/. In comparison with pure 0.95MgTiO3–0.05CaTiO3 ceramics, the doped sample shows not only a 22% loss reduction but also a lower sintering temperature. That makes it a very promising material to replace the present one for GPS patch antennas.

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Periodical:

Applied Mechanics and Materials (Volume 666)

Pages:

27-30

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.666.27

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Online since:

October 2014

Authors:

Chung Long Pan, Chun Hsu Shen, Wei Cheng Lin, Shin Hung Lin

Keywords:

Dielectric Property, Liquid Phase Sintering, Low Loss, MgTiO3–CaTiO3

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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