Properties of NaNbO3 powders and ceramics prepared by hydrothermal reaction

▶ The main concentration of current hydrothermal methods about NN powders are on the conditions of the preparation process and the structure evolution from the solid reactant to the intermediate and final product, very few efforts have been made to study the properties of ceramics prepared by hydrothermal methods. ▶ Two different kinds of NN powders were synthesized for the property comparison via hydrothermal and conventional mixed-oxide methods in this study. The properties of the two different kinds of NN ceramics such as dielectricity and piezoelectricity were also detected. ▶ The results illustrated that the sintering temperature of HT-synthesized ceramics was lower and compactness was better than that of CMO-synthesized ceramics. What's more, the HT-synthesized ceramics obtained better electrical properties than that of CMO-synthesized ceramics.