Low temperature sintering and microwave dielectric properties of novel temperature stable Li3Mg2NbO6-0.1TiO2 ceramics

Novel temperature stable Li3Mg2NbO6-0.1TiO2 (LMNT) ceramics doped with Li2O-B2O3-Bi2O3-SiO2 (LBBS) glass were synthetized by a solid-state route. The sintering temperature of the LBBS glass doped LMNT ceramics can be effectively lowered to 900 °C. The experimental results revealed that the addition of the LBBS glass can assist to improve the Q × f values while shifting the τf values toward negative direction. Particularly, the 1 wt% of LBBS glass doped LMNT ceramic sintered at 900 °C for 4 h possessed excellent microwave dielectric properties: εr = 16, Q × f = 42,648 GHz, τf = −1ppm/°C, which is potential for LTCC applications.