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

• Published in: Materials chemistry and physics Vol. 134; no. 1; pp. 87 - 92
• Main Authors: Bobowska, Izabela, Opasińska, Agnieszka, Wypych, Aleksandra, Wojciechowski, Piotr
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.05.2012
• Subjects: Atmospherics; Ceramics; Coefficients; Density; Dielectric properties; Electronic materials; High temperature; Precipitation; Precursors; Raman spectroscopy and scattering; Sintering; Titanates; Zinc; Electronic materials; Precipitation; Raman spectroscopy and scattering; Ceramics; Sintering; Dielectric properties
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2012.02.033

► Novel method of ZnTiO3 synthesis. ► Environment friendly. ► Excellent dielectric properties. 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 18ppm at the frequency of 1.15MHz. The density of the zinc titanate ceramic was equal to approximately 80% of the theoretical density of the ZnTiO3 crystals.