Back to Search Start Over

Low-temperature sintering and microwave dielectric properties of TiO2-based LTCC materials

Authors :
Xi Yao
Li-Xia Pang
Di Zhou
Hong Wang
Source :
Journal of Materials Science: Materials in Electronics. 21:1285-1292
Publication Year :
2010
Publisher :
Springer Science and Business Media LLC, 2010.

Abstract

Temperature stable high-K LTCC material was prepared. The influence of fabrication process on the crystalline phases, microstructures and microwave dielectric properties of TiO2-Bi2O3-CuO ceramics were investigated. The crystalline phases and microstructures of TiO2-Bi2O3-CuO ceramics were investigated by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy. It was found that rutile TiO2 phase and Bi2Ti4O11 phase co-existed in the TiO2-Bi2O3-CuO ceramics. Separate TiO2 grains and Bi2Ti4O11 grains distributed uniformly in the ceramic matrix. The composition 0.92TiO2-0.08Bi2Ti4O11 with 2 wt% CuO addition that was sintered at 900 °C for 2 h showed high dielectric constant (er ~ 81), high quality factor (Q × f ~ 3,500 GHz) and near zero temperature coefficient of resonant frequency (τf ~ −5.1 ppm/°C), meanwhile the compatibility test showed that it could co-fire with silver electrode. The processing-microstructure-property interrelationship was also studied.

Details

ISSN :
1573482X and 09574522
Volume :
21
Database :
OpenAIRE
Journal :
Journal of Materials Science: Materials in Electronics
Accession number :
edsair.doi...........14cd0a9a907fc4cdcc6f0aa1ffa2ea98
Full Text :
https://doi.org/10.1007/s10854-010-0064-4