Effect of PbO–B2O3–V2O5 glass on the microwave dielectric properties of (Pb, Ca, La)(Fe, Nb)O3 ceramics

Effects of PbO–B2O3–V2O5 glass on microwave dielectric properties of (Pb, Ca, La)(Fe, Nb)O3 (PCLFN) ceramics were investigated as a function of sintering temperature from 950 to 1100 °C. Pure PCLFN ceramics sintered at 1150 °C showed the dielectric constant (K) of 103, Qf of 5640 GHz and TCF of 7.1 ppm °C−1. The sintering temperature of the specimens with the glass reduced to ∼1050 °C without the degradation of microwave dielectric properties. Qf values were not changed drastically with the glass content. For the specimens with 1.0 wt.% glass sintered at 1050 °C for 3 h, K, Qf and TCF were 101, 5400 GHz and 5.9 ppm °C−1, respectively.