A facile co-precipitation synthesis of hexagonal (Zn, Mg)TiO3

• Hexagonal (Zn, Mg)TiO3 dielectric materials was synthesized via a facile co-precipitation using TiOSO4 as Ti4 + source.
• The effect of pH value and calcination temperatures on the crystallization of ZMTO has been studied.
• Dielectric analysis shows that better crystallization results in better dielectric properties.

Dielectric zinc magnesium titanate (ZMTO) was synthesized by a facile co-precipitation method using TiOSO4 as the Ti source. The decomposition and phase evolvement of the as-prepared precipitates during heat treatment were characterized by thermogravimetry analysis (TGA) and Fourier-transforming infrared (FT-IR) spectroscopy. X-ray diffractometry shows that different pH levels have a significant influence on the crystallization of the as-prepared precipitate due to the magnesium doping content. SEM images and EDS data show that fine hexagonal (Zn, Mg)TiO3 powders with a Mg doping content of 2.29 at.% could be obtained at a pH of 9 and a calcination temperature of 800 °C. After sintering at 1000 °C, hexagonal (Zn, Mg)TiO3 demonstrated a dielectric constant of 26–24 along with a low dielectric loss of 9.82 × 10− 4–6.35 × 10− 4 at measurement frequencies between 108 and 109 Hz.

Fine hexagonal zinc magnesium titanate (ZMTO) with good microwave dielectric properties was synthesized by a facile co-precipitation method using TiOSO4 as the Ti source. The effect of pH value and calcination temperatures on the crystallization and morphology of ZMTO has been studied by XRD and SEM methods.Figure optionsDownload as PowerPoint slide