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In this work the advantage of the use of the microwave technology was exploited for the preparation of perovskite ceramics. Microwave-assisted hydrothermal method has been applied to the preparation of strontium-doped lanthanum manganites with different stoichiometric ratio of the three oxides, La 1-x Sr x MnO 3 (x = 0.3, 0.5, 0.6). In particular, pure black narrow dispersed crystallites of La 0.5 Sr 0.5 MnO 3 of 0.68±0.18 μm were prepared in only 45 minutes at 240°C and a KOH concentration of 21 M. The complete chemical, mineralogical and micro- structural characterization of the powders reveal the same structural properties of the perovskite powders previously synthesised by ceramic and conventional hydrothermal routes.

Microwave advantages in inorganic synthesis of La0.5 Sr0.5MnO3 powders for perovskite ceramics