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.