Abstract
In this paper, a facile molten-salt strategy is developed for controllably synthesizing LiNbO3 microcrystals shaped as octahedrons and cubes in molten LiNO3 and LiCl salts without using any capping agents. The as-prepared LiNbO3 micro-octahedrons and micro-cubes are characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and selected area electron diffraction (SAED). Our results show that the formation of LiNbO3 micro-octahedrons and micro-cubes can be attributed to a dissolution-nucleation-aggregation-recrystallization process. Furthermore, in order to minimize the surface and interface energies between the constituents and the salts, octahedral and cubic morphology forms under different molten-salt conditions, which shows the anion may play a crucial role in tuning the product morphology.
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