Novel X8R-type BaTiO3-based ceramics with a high dielectric constant created by doping nanocomposites with Li–Ti–Si–O

A novel system of temperature-stable Electronic Industries Alliance X8R dielectric materials with high dielectric constants can be obtained by doping BaTiO₃-K_0.5Na_0.5NbO₃ ceramic nanocomposites with 0.7 wt% Li–Ti–Si–O. The dielectric constant is greater than 3,960 at 25 °C, with a dielectric loss lower than 0.8 % and a temperature coefficient of capacitance less than ±12 % from ?55 to 150 °C. The doping increased the degree of tetragonality, grain size, and density, thereby increasing the dielectric constant. We provide additional data on the phase composition, microstructure, and dielectric properties of the doped samples. These materials show high potential for applications in X8R-type multilayer ceramic capacitors.