Low temperature sintering of (Zn1−x, Mgx)TiO3 microwave dielectrics

The effects of glass additives and milling process on the microwave dielectric properties of (Zn1−x, Mgx) TiO3 (ZMT) ceramics were investigated. Three glasses including B2O3-SiO2-ZnO-Na2O (B-Si-Zn-Na), B2O3-SiO2-ZnO-K2O (B-Si-Zn-K) and B2O3-K2O-MnCO3 (B-K-Mn) were selected for this study. Host material (Zn0.6Mg0.4)TiO3 was selected to be sintered with glasses in the temperature range of 900-1200 °C. For (Zn0.6Mg0.4)TiO3 with 5 wt.% glass B-Si-Zn-K sintered at 1100 °C, the ϵr and Q × f values were 18 and 29,375, respectively. Taking advantage of satellite milling, the ZMT ceramics can be sintered at 950 °C with the density of 4.21 g/cm3, ϵr = 19, and Q × f = 18,957.