Article ID Journal Published Year Pages File Type
1799861 Journal of Magnetism and Magnetic Materials 2014 5 Pages PDF
Abstract

•An auto-combustion method support to prepare less size of particles.•The excellent magnetic properties obtained by as-burnt samples.•Nature of the ferrites was affected with increasing annealing temperature.

Manganese substituted CoFe2O4 nanoparticles has been prepared by a simple evaporation method and auto combustion method. The role of annealing temperature on phase, particle size and morphology of Mn–Co ferrite nanoparticles were determined by X-ray diffraction, and transmission electron microscopy (TEM). The lowest size of particles (~3 nm) is obtained by auto combustion method. The annealing effect creates a vital change in magnetic properties which is studied by using vibrating sample magnetometer (VSM). These spinel ferrites are decomposed to α-Fe2O3 after annealing above 550 °C in air. However, α-Fe2O3 phase was slowly vanished after ferrites annealing above 900 °C. The effect of this secondary phase on the structural and magnetic properties of Mn substituted cobalt ferrite nanoparticles is also discussed.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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