科研之友
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摘要
A new low sintering temperature microwave dielectric ceramic, Li(2)ZnTi(3)O(8), was investigated. X-ray diffraction data show that Li(2)ZnTi(3)O(8) has a cubic structure [P4332 (212)] with lattice parameters a = 8.37506 angstrom, V = 587.44 angstrom(3), and Z = 4 when the sintering temperature is 1050 degrees C. The Li(2)ZnTi(3)O(8) ceramic exhibits good microwave dielectric properties with Er about 26.2, Qxf value about 62,000 GHz, and tau(f) about -15 ppm/degrees C. The addition of BaCu(B(2)O(5)) can effectively lower the sintering temperature from 1050 to 900 degrees C without degrading the microwave dielectric properties. Compatibility with Ag electrode indicates this material can be applied to low temperature cofired ceramic devices.
