Abstract
The effect of the glass doping on densification, low temperature sintering, and microwave dielectric properties of the Ca[(Li1/3Nb2/3)1-xTix]O3-δ(CLNT) was investigated. Addition of glass (B2O3-ZnO-SiO2-PbO) improved the densification and reduced the sintering temperature from 1150oC to 900oC of CLNT microwave dielectric ceramics. As increasing glass contents from 10 wt% to 15 wt%, the dielectric constant (εr) and bulk density were increased. The quality factor (QXf0), however, was decreased slightly. The temperature coefficients of the resonant frequency (τf) shifted positive value as increasing glass contents over Ti content of 0.2mol. The dielectric properties of Ca[(Li1/3 Nb2/3)0.8Ti0.2]O3-δ with 12wt% glass sintered at 900oC for 3h were εr = 40 QXf0 = 12,500 GHz, τf =-8 ppm/oC, respectively. The relationship between the microstructure and dielectric properties of ceramics was studied by X-ray diffraction (XRD), and SEM.
