Structural and magnetic conduct in Sm and Al substituted Ba0.9Sm0.1Fe10Al2O19 M-type hexaferrites at different sintering temperatures

The hexagonal ferrites with composition Ba0.9Sm0.1Fe10Al2O19 has been prepared by using conventional solid state reaction method. As prepared samples were then sintered at different sintering temperatures to analyze the effects on magnetic and structural properties of Barium hexa ferrites. These samples were then characterized by using various techniques. For structural characterization x-ray diffraction technique was used. XRD results confirmed phase pure hexagonal structure. No impurity peaks were observed. For Morphological analysis of all the samples Scanning Electron Microscopy (SEM) was utilized. SEM micrographs suggested the formation of hexaferrites material with homogenous distribution of particles. Magnetic properties were measured by permanent magnetic measuring system. Magnetic conduction of material was tested under varying magnetic field of ± 30 KOe at room temperature. The saturation magnetization value was observed 48.55 emu g−1 and coercivity 5.01KOe for the sample sintered at 1220 °C. As the sintering temperature rises, the values for magnetic saturation decreases to 46.24 emu g−1 and coercivity increases up to 5.26 KOe at 1270 °C.

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