Low temperature green synthesis of LaAlO 3 using microcrystalline LaOCl and amorphous Al 2 O 3 precursors derived from spray pyrolysis

LaAlO 3 was synthesized using microcrystalline LaOCl and amorphous Al 2 O 3 precursors. The precursors were derived with single inorganic materials through spray pyrolysis. The precursors and derived oxide powders were characterized by differential thermal analysis, scanning electron microscopy, X-ray diffraction, and transmission electron microscopy. LaAlO 3 was found to crystallize directly from microcrystalline LaOCl and amorphous Al 2 O 3 precursors at 1073 K for 2 h in air, and the LaAlO 3 product purity is more than 99.9%.