A modified molten salt synthesis was explored to investigate the A-site occupancy (K⁺ and Sr²⁺) and morphology change of the KSr₂Nb₅O₁₅ (KSN) microcrystalline. The difference between this work and the conventional method was that the raw materials were pressed into blocks under a certain pressure before calcination. The effects of pressure and temperature on the chemical composition and particle morphology of KSN powder were analyzed. The composition and morphology of the obtained powder varied significantly with the various pressures and temperatures. It was found that as the pressure and temperature increased, more Sr ions tended to occupy vacant A sites and the particle size become uneven. Increasing pressure benefited to the formation of slender particles, while raising calcination temperature could promote the particles growth along diameter direction. The results of the KSN ceramics suggested that this will be an effective way to fabricate the ideal template for the preparation of textured ceramics by adjusting the pressure and temperature.

探索了一种改进的熔融盐合成方法，以研究KSr ₂ Nb ₅ O ₁₅的A位占有率（K ⁺和Sr ²⁺）以及形态变化（KSN）微晶。这项工作与常规方法之间的区别在于，煅烧之前将原材料在一定压力下压成块。分析了压力和温度对KSN粉末化学组成和颗粒形貌的影响。所获得的粉末的组成和形态随压力和温度的不同而显着变化。已经发现，随着压力和温度的升高，更多的Sr离子趋向于占据空位A，并且粒径变得不均匀。增大压力有利于形成细长的颗粒，而提高煅烧温度可以促进颗粒沿直径方向的生长。