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A new low-loss microwave dielectric ceramic for low temperature cofired ceramic applications

Published online by Cambridge University Press:  31 January 2011

Huanfu Zhou ,
Xiuli Chen ,
Liang Fang ,
Dongjin Chu  and
Hong Wang
Dongjin Chu
Affiliation:
State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Guilin University of Technology, Guilin 541004, People's Republic of China; and Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin 541004, China
Hong Wang
Affiliation:
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of the Education, Xi'an Jiaotong University, Xi'an 710049, China
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Abstract

A new low sintering temperature microwave dielectric ceramic, Li2ZnTi3O8, was investigated. X-ray diffraction data show that Li2ZnTi3O8 has a cubic structure [P4332(212)] with lattice parameters a = 8.37506 Å, V = 587.44 Å3, and Z = 4 when the sintering temperature is 1050 °C. The Li2ZnTi3O8 ceramic exhibits good microwave dielectric properties with εr about 26.2, Q×f value about 62,000 GHz, and τf about −15 ppm/°C. The addition of BaCu(B2O5) can effectively lower the sintering temperature from 1050 to 900 °C without degrading the microwave dielectric properties. Compatibility with Ag electrode indicates this material can be applied to low temperature cofired ceramic devices.

Keywords

Electronic materialDielectric propertiesMicrostructure
Type
Materials Communications
Information
Journal of Materials Research , Volume 25 , Issue 7 , July 2010 , pp. 1235 - 1238
Copyright
Copyright © Materials Research Society 2010

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