Microwave dielectric properties of Li2TiO3 ceramics doped with LiF for LTCC applications

► LiF can effectively reduce the sintering temperature of Li2TiO3 ceramics to 950 °C. ► LiF was uniformly distributed in the matrix, and continuous solid solution formed. ► Li2TiO3 ceramics with 2.5 wt.% LiF sintered at 950 °C possessed very high Q × f value. ► The low-temperature sintering ceramics are compatible with Ag electrodes.