Microwave dielectric properties of B2O3 doped Ca[(Li1/3Nb2/3)(0.9)Ti-0.1]O3-delta ceramics

Abstract

The effect of B2O3 doping on microwave dielectric properties of Ca[(Li1/3Nb2/3)(09)Ti-0.1]O3-delta was investigated. The Ca[(Li1/3Nb2/3)(0.9)Ti-0.1]O3-delta ceramics was sintered at 1150 degreesC. In order to decrease the sintering temperature for using as a low temperature co-firing ceramics (LTCC), B2O3 was added in the Ca[(Li1/3Nb2/3)(0.9)Ti-0.1]O3-delta. As the content of B2O3 increased, the sintered density,the dielectric constant and Q.f(o) value increased and the temperature coefficient of resonance frequency (tau(f)) shifted to the negative value, When the B2O3 of 0.7 wt% added, the dielectric properties were epsilon(r) of 35, Q.f(o) of 22100 GHz, and tau(f) of -5.6 ppm/degreesC at the sintering temperature of 1000degreesC.