Structure and dielectric properties of (1-x)BiNaTiOBaTiO piezoceramics prepared using hydrothermally synthesized powders.

The influence of different processing parameters and various Ba addition (up to 10 mol%) on the structure and dielectric properties of BiNaTiO-BaTiO (BNT-BT) ceramics was investigated. The powders were hydrothermally synthesized in the alkaline environment at 180°C for different time periods. X-ray diffraction confirmed the presence of dominant rhombohedral BiNaTiO phase and a small amount of secondary pyrochlore BiTiO phase in the pure BNT powders.