Synthesis and dielectric investigations of ZnTiO3 obtained by a soft chemistry route

In this paper, we report a strategy for preparing an inorganic zinc titanate precursor by applying a chemical bath deposition method (CBD) to ZnO nanocrystals in an aqueous layered titanate colloid. The zinc titanate precursor, obtained as a precipitate, undergoes profound changes under the influence of elevated temperatures in normal atmospheric conditions and allows us to obtain zinc titanate ZnTiO3 with a rhombohedral symmetry. Investigations of its dielectric properties enabled us to determine a dielectric permittivity (ɛ) of 25, a low loss factor tan(δ) < 10−3, and a temperature coefficient (τɛ) of 18 ppm at the frequency of 1.15 MHz. The density of the zinc titanate ceramic was equal to approximately 80% of the theoretical density of the ZnTiO3 crystals.

► Novel method of ZnTiO3 synthesis. ► Environment friendly. ► Excellent dielectric properties.