Nanostructured perovskite powders via simple carbonate co-precipitation

A very simple, cost-effective, chloride- and alkali-free, carbonate co-precipitation synthesis 16 in aqueous medium was applied for the preparation of perovskite-type lanthanum manganese 17 oxide-based powders, i.e. La0.70Sr0.30MnO3-d (LSM) and La0.75Sr0.25Cr0.5Mn0.5O3-d (LSCrM). 18 The obtained precursors yielded nano-structured perovskite oxides when treated at 900 and 19 800 °C, respectively. The measured BET surface areas were in the low-end range for high temperature oxides (4 and 10 m2g-120 ), but the X-ray crystallite size was as low as 50 nm for 21 LSCrM and 90 nm for LSM.