Phase Formation and Optimisation of the Properties of Solid Solutions in a KNN-Based System for Hydroacoustics Devices

Following bans on the use of toxic substances in electrical and electronic equipment, since 2003, special attention has been paid to the development and production of lead-free materials based on sodium-potassium niobate systems. This study reports the results of optimising the ferro-piezoelectric properties of LiaKbNaNbdTamSbnO3 solid solutions using technological systems and doping. The influence of the ratio of components and dopants on the structure and piezoelectric properties of solid solutions is established. The promising compositions, which may be the basis for producing functional materials that can be used in hydroacoustic devices, were selected by analysing the dielectric and piezoelectric characteristics.