Preparation of plate‐like potassium sodium niobate particles by hydrothermal method

Abstract

Abstract Potassium sodium niobate (K,Na)NbO 3 (KNN) particles with a plate‐like morphology were prepared. First, an unknown potassium sodium niobate hydrate particles with 150‐nm thickness and 1500‐nm width were synthesised by a hydrothermal method. After calcining these particles at 450 °C, plate‐like KNN particles were obtained, which were expected to be used as templates for KNN textured ceramics. It was found that sodium dodecyl‐benzene‐sulfonate (SDBS) acting as surfactant played an important role in controlling the morphology of the particles in the hydrothermal process. The SDBS surfactant‐assisted hydrothermal synthesis is feasible for the mass production of plate‐like alkaline niobate template particles. magnified image