Influence of Li2WO4 aid and sintering temperature on microstructures and microwave dielectric properties of Zn2SnO4 ceramics

In this study, the microwave dielectric properties of Zn2SnO4 ceramics prepared by the conventional solid-state method were investigated for application in mobile communication. Li2WO4 was selected as a liquid sintering aid to reduce the sintering temperature of Zn2SnO4 ceramics. By adding 0.75 wt% Li2WO4, a dielectric constant of 5.35, a quality factor (Qf) of 29,500 GHz, and a temperature coefficient of resonant frequency τfτf (−76 ppm/°C) were obtained when Zn2SnO4 ceramics were sintered at 975 °C for 4 h.