Effect of B2O3 on the sintering and microwave dielectric properties of M-phase LiNb0.6Ti0.5O3 ceramics

The effect of B2O3 addition on the sintering, microstructure and the microwave dielectric properties of LiNb0.6Ti0.5O3 ceramics was investigated. Low-level doping of B2O3 (up to 2 wt%) can significantly improve the densification and dielectric properties of LiNb0.6Ti0.5O3 ceramics. Due to the liquid...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 2007, Vol.27 (1), p.261-265
Main Authors: QUN ZENG, WEI LI, SHI, Jian-Lin, GUO, Jing-Kun, HENG CHEN, LIU, Ming-Lin
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Electrotechnical and electronic ceramics
Exact sciences and technology
Technical ceramics
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Summary:The effect of B2O3 addition on the sintering, microstructure and the microwave dielectric properties of LiNb0.6Ti0.5O3 ceramics was investigated. Low-level doping of B2O3 (up to 2 wt%) can significantly improve the densification and dielectric properties of LiNb0.6Ti0.5O3 ceramics. Due to the liquid phase effect of B2O3 addition, LiNb0.6Ti0.5O3 ceramics could be sintered to a theoretical density > 95% even at 880 C. No secondary phase was seen for the B2O3-doped ceramics. There was no obvious degradation in dielectric properties for the ceramics with B2O3 additions. With 1 wt% B2O3 addition, the ceramics sintered at 880 C showed good microwave dielectric properties of epsilonr = 70, Qxf = 5400 GHz, tauf = -6.39 ppm/C. These ceramics could be used for multilayer low-temperature co-fired ceramics (LTCC) applications. 16 refs.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2006.04.174