Microstructural and Thermal Properties of Pure BaFe_(12)O_(19) and Sr doped Barium Ferrite (Ba_(0.9)Sr_(0.1)Fe_(12)O_(19)) Synthesized By Auto Combustion Method

摘要

Nanoparticles (NPs) of Pure BaFe_(12)O_(19) and Strontium doped Barium Ferrite (Ba_(0.9)Sr_(0.1)Fe_(12)O_(19)) have been successfully synthesized by Auto combustion method using citric acid as a chelating agent and calcined at 450°C for 3 hrs and 850°C for 4 hrs. Microstructural studies were carried by XRD and SEM techniques. Structural studies suggest that the crystal system remains hexagonal even with the doping of Strontium. The XRD analysis confirms the formation of the structures in the nanometer regime and the peaks are the evidence of the crystalline phase. The SEM images shows the morphology of surface of the samples. The thermal property studied by TGA shows the weight loss which is with varying the temperature and weight loss also varies with Sr doping. The TGA analysis exhibits the loss of weight at different temperatures.