Synthesis of Complex Conducting Oxides SrFeSrFeCo_(0.5)O_x by Citrates Sol-gel Method

Conducting oxides SrFeCo0.5Ox powder was prepared by nitrate solgel method. Thermal reaction of the gel during heating is investigated by DTA and the crystal structure and morphology of the calcined powder were characterized by xray diffraction (XRD) and transmission electron microscope (TEM) respectively. The results show that single perovskite oxide can be formed at 550?℃ with x=064. The oxide size particle is in nanometer grade and very uniform. As the calcined temperature increases up to 850?℃,the phase of the sample still does not change but the particles size becomes 100?nm. The polymerization reaction of nitrates solgel is also discussed.