In situ solid state oxidation reaction for La1−xSrxMnO3 (x=0, 0.1, 0.2 and 0.3) formation

Abstract In situ solid state oxidation reaction for an alternative La 1− x Sr x MnO 3 ( x =0, 0.1, 0.2 and 0.3) formation is reported. Samples have been obtained by using strontium peroxide, lanthanum and manganese (III) oxide reagents. Strontium peroxide has induced the oxidation of Mn +3 to Mn +4 . Lanthanum strontium-doped manganite was obtained without secondary phase formation. La 0.825 Sr 0.175 MnO 3 showed two structural transitions, the first from 88 to 373 K and the second at 1073 K, which are explained by Jahn–Teller effect at low temperature and cation displacement at high temperature.