Low temperature sintering and microwave dielectric properties of Li3Mg2NbO6 ceramics doped with Li2O–B2O3–SiO2 glass

Abstract The effect of LBS glass on sintering characteristics, microstructures and microwave dielectric properties of Li3Mg2NbO6 ceramics was investigated by solid-state method. The experimental results demonstrated that the addition of LBS glass could effectively lower the sintering temperature of Li3Mg2NbO6 ceramics to 875 °C and promote the Q × f value. The variations in the dielectric constant (er), Q × f values and τƒ values of Li3Mg2NbO6 ceramics were depended on the amount of LBS glass and the sintering temperature. Li3Mg2NbO6 ceramics with 1.0 wt% LBS glass addition sintered at 875 °C for 4 h exhibited excellent microwave dielectric properties of ɛr∼14.89, Q × f∼86,720GHz and τƒ∼-15.46 ppm/°C, which could be applied in LTCC applications.