Abstract
Highly crystalline cobalt nano ferrites have been synthesized by the combustion route using dl-alanine, a racemic mixture of right handed (d) and left handed (l) chemical forms of alpha-alanine, as fuel. The synthesized samples were annealed at two different temperatures, viz. 500°C and 800°C, for 2h to investigate the temperature effect on crystallite size, phase purity, thermal stability, Curie temperature, and magnetic properties. Formation of single-phase spinel nanoparticles in both the as-prepared and annealed conditions has been observed. High saturation magnetization (71.1emu/g) for as-prepared sample and a high coercive field (1400Oe) for the sample annealed at 500°C/2h were obtained.
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