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Low-Temperature Sintering and Microwave Dielectric Properties of the Li2CO3-Added Ba2V2O7 Ceramics

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Li2CO3 was added to Ba2V2O7 ceramics at various contents up to 20 mol% to decrease their sintering time and temperature. The Li2CO3-added Ba2V2O7 ceramics sintered at 750°C for 2 h had a dense microstructure with a high density. A liquid phase, which existed as an amorphous phase after cooling, was formed during the sintering due to the melting of Li2CO3 and aided the densification of the specimens. The 6.0 mol% Li2CO3-added ceramic sintered at 750°C showed good microwave dielectric properties of r=10.93, Q×f=74 513 GHz, and f=−19.86 ppm/°C, indicating that the Li2CO3-added Ba2V2O7 ceramic is a good candidate material for low-temperature cofired ceramics.
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Document Type: Research Article

Affiliations: 1: Department of Materials Science and Engineering, Korea University, Seoul 136-701, South Korea 2: Korea Institute of Ceramic Engineering and Technology, Seoul 153-801, South Korea

Publication date: 2010-04-01

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