Sol-gel synthesis of the double perovskite sr2femoo6 assisted by microwave technique

Abstract

A sol-gel synthesis of the double perovskite Sr2FeMoO6 assisted by microwave technique was performed. A citric acid was used as chelating agent to modify the hydrolysis of the metal ions. The sol-gel synthesis was carried out in order to generate the precursor phases of the Sr2FeMoO6 system. Also, the conventional sol-gel synthesis was carried out for comparison purposes. The high pressures achieved with microwave heating generate phases with high crystallinity according to the X-ray pattern obtained. Besides, small rates of the metallic clusters of iron are present in the XRD pattern. Scanning electron microscope technique also was carried out for characterization of the precursor phases and the final system.