Low temperature sintering of barium titanate based ceramics with high dielectric constant for LTCC applications

The sintering temperature of BaTiO3 powder was reduced to 900 °C due to the ZnO–B2O3–Li2O–Nb2O5–Co2O3 addition. Excellent densification was achieved after sintering at 900 °C for 2 h. The low sintering temperature of newly developed capacitor materials allows a co-firing with pure silver electrodes. The dielectric constant and the temperature stability of the dielectric constant are strongly correlated with the composition of the ZnO–B2O3–Li2O additives. A high dielectric constant up to 3000 and a dielectric loss less than 0.024 were measured on multilayer capacitors sintered at 900 °C with silver inner electrodes.