Low temperature sintering and microwave dielectric properties of novel temperature stable Li_3Mg_2NbO_6-0.1TiO_2 ceramics

摘要

Novel temperature stable Li3Mg2NbO6-0.1TiO(2) (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 degrees C. The experimental results revealed that the addition of the LBBS glass can assist to improve the Q x f values while shifting the tau(f) values toward negative direction. Particularly, the 1 wt% of LBBS glass doped LMNT ceramic sintered at 900 degrees C for 4 h possessed excellent microwave dielectric properties: epsilon(r) = 16, Q x f = 42,648 GHz, tau(f) = -1ppm/degrees C, which is potential for LTCC applications. (C) 2018 Elsevier B.V. All rights reserved.