was prepared by the combustion method using polyvinyl alcohol (PVA) and corresponding metal nitrates. Samples were characterized by thermogravimetric and differential thermal analysis (TG-DTA), X-ray diffraction (XRD), FT-IR spectra, transmission electron microscopy (TEM) and BET (Brunaure-Emmet-Teller) measurements. The results show that perovskite phase is formed at 600o C. Sample synthesized under optimal condition has nanostructure with large specific area.