EFFECT OF SINTERING TEMPERATURE ON THE STRUCTURAL AND MAGNETIC PROPERTIES OF COBALT FERRITE NANOPARTICLES
Аннотация:
Cobalt ferrite nanoparticles have been synthesized by the sol-gel method. The prepared sample was sintered at four different temperatures (300 ˚ C, 400 ˚ C, 500 ˚ C and 700 ˚ C) for four hours. The structural charac- terizations of all the prepared samples were done using XRD, TEM and FTIR. Crystallite size was found to increase with sintering temperature and this can be attributed to the grain growth of the particles. The par- ticle size of each sample was determined using TEM. The FTIR spectra show two strong absorption bands in the range of 1000–400 cm−1, characteristic of spinel ferrites. The room temperature magnetic measurements showed a strong influence of sintering temperature on saturation magnetization and coercivity.
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