In this work, the molten salt synthesis technique was applied to the synthesis of EuAlO3 powder using NaCl or KCl salt as the flux. EuAlO3 powder was synthesized by reacting equimolar amounts of Eu2O3 and Al2O3 powders in NaCl or KCl salt. The synthesis temperature for EuAlO3 using NaCl or KCl salt was 1200 oC which is about 400 oC lower than that in the conventional mixed-oxide method. The synthesized powders have been characterized using powder X-ray diffraction (XRD) analysis and field emission scanning electron microscopy (FE-SEM). The synthesized EuAlO3 powders retained the morphology of the original Al2O3 particles, indicating that a template formation mechanism plays an important role in the molten salt synthesis of EuAlO3.

Keywords: molten salt synthesis, powder, EuAlO3.