Hydroxy Acid-Aided Synthesis of Perovskite-Type Oxides of Cobalt and Manganese

Abstract

Abstract The hydroxy acid-aided process using citric or malic acid produced a perovskite phase at relatively low calcination temperatures. The adjustment of the starting solution to an appropriate pH value in the malic acid-aided process resulted in reducing the temperature for the formation of single-phase perovskite-type oxides and in producing large surface-area oxides.