LAUSR

Li6Mg7Ti3O16 ceramics were prepared by the conventional solid-state method with 1–5 wt% LiF as the sintering aid. Effects of LiF additions on the phase compositions, sintering characteristics, micro-structures and microwave dielectric properties of Li6Mg7Ti3O16 ceramics were investigated. The LiF addition could effectively lower the sintering temperature of Li6Mg7Ti3O16 ceramics from 1550 to 900 °C. For different LiF-doped compositions, the optimum dielectric permittivity (εr) and quality factor (Q·f) values first increased and then decreased with the increase of LiF contents, whereas the temperature coefficient of resonant frequency (τf) fluctuated between − 14.39 and − 8.21 ppm/°C. Typically, Li6Mg7Ti3O16 ceramics with 4 wt% LiF sintered at 900 °C exhibited excellent microwave dielectric properties of εr = 16.17, Q·f = 80,921 GHz and τf = − 8.21 ppm/°C, which are promising materials for the low temperature co-fired ceramics applications.