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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

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.

Type
Materials Communications
Copyright
Copyright © Materials Research Society 2010

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