Cubic barium titanate (BaTiO 3) powder was synthesized by heating barium titanyl oxalate hydrate, BaTiO(C 2 O 4) 2 ⋅ ⋅4H 2 O (BTO) precursor in microwave heating system in air at 500°C. Heating BTO in microwave above 600°C yielded tetragonal form of BaTiO 3. Experiments repeated in silicon carbide furnace showed that BaTiO 3 was formed only above 700°C. The product obtained was cubic.
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