Sofiane Makhloufi* | Mahmoud Omari
OPEN ACCESS
Our contribution has focused on the synthesis and characterization of strontium cobalt SrCoO3-δ oxide by the Sol-Gel method. The powder was successfully synthesized using citric acid, Sr (NO3)2 and Co (NO3)2.6H2O as raw materials by this method and calcined at different temperatures. It was characterized by several techniques: Fourier transform infrared spectroscopy (FT-IR), thermogravimetric and differential thermal analysis (TGA/DTA), X-ray diffraction (XRD) and laser diffusion. All the results for physico-chemicals characterizations show that the crystallization temperature of the SrCoO3-δ precursor gels is estimated as 900 °C by TG/DTA. The XRD pattern of the SrCoO3-δ precursor gels calcined at 950 °C for 6 h has a perovskite structure of rhombohedral phase formed and the presence of crystalline impurities is not found. The crystallite size of SrCoO3-δ slightly increases from 23,02 to 38,13 nm with calcination temperature increasing from 750 to1050 °C for 6 h.
Perovskite, Rhombohedral SrCoO3-δ, Sol-Gel method, Strontium cobalt oxides, Thermal analysis.
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