Synthesis of Needle-like NaNbO3 Particles by Hydrothermal Process

In this study, sodium niobate powders were prepared by hydrothermal process for further use as template particles in the texturing of piezoelectric potassium sodium niobate fibers. At the end of the study, three different structures were obtained: Sodium hexaniobate particles with rod-like morphology at 120 degrees C, particles with partially needle-like morphology at 130 degrees C 140 degrees C and SOMS particles with totally needle-like morphology at 150 degrees C. Finally, sodium niobate particles with cubic morphology were obtained at 160 degrees C and above. Rod-like and needle-like morphology was retained even after annealing at 400 degrees C. SOMS particles were sintered at 1135 degrees C for 1 hour and transmission electron microscopy study was carried out to investigate their morphological and structural changes explain after annealing.