Effect of Temperature on the Structural and Magnetic Properties of CuFe2O4 Nano Particle Prepared by Chemical Co-Precipitation Method

Abstract

Abstract-The behaviors of the CuFe 2 O 4 nano particle prepared by chemical co-precipitation have been studied. The XRD result of the as dried and samples calcined at different sintering temperature has shown that the single phase has been observed in the as dried condition and there is no observation of extra peak. The grain size has been obtained from Scherrer's formula and found as 4nm to 56nm for the CuFe 2 O 4 nano particle sample with the systematic variation of sintering temperature. Nano particle has been characterized to understand the magnetic properties from the observation of hysteresis loops.The initial permeability varies with sintering temperature due to the variation in kinetics of diffusion which depends on the particle size of the starting material. The Curie temperature has been measured from the result of temperature dependent initial permeability.

Synthesis of Carbon Encapsulated Mono‐ and Multi‐Iron Nanoparticles

“…CEINPs and CEMINPs magnetic behaviors were investigated at 300 K. Figure 7(a) represents comparison of normalized hysteresis curve for N100, N75, N50, N25, and N0 samples. The saturation magnetization for the nanocrystalline ferrites, in general, is found to be lower compared to their bulk value, which is attributed to surface spin effects [58]. Saturation magnetization largely depends on size, shape, metal composition, and crystalline magnetic anisotropy energy, as well as coating by nonmagnetic materials [52,59].…”

Anion-Exchange Synthesis of Copper Ferrite Powders

“…The chemical precipitation method makes it possible to obtain uniform fixtures that do not require careful grinding and mixing. This method is quite simple and does not require expensive apparatus; it also makes it possible to lower the heat-treatment temperature, but the precipitates formed in this case, as a rule, are contaminated with the precipitant ions [8,9], which negatively impacts the properties of the obtained materials and the interaction of precursors, so that pro¬ longed washing of the precipitate is required. For example, in [8] it was not possible to obtain a pure phase of copper ferrite (the product is contaminated with the oxides CuO and a-Fe 2 O 3 ) even after triple washing with hot water and then ethanol and acetone, followed by calcination at 700°C.…”

“…For example, in [8] it was not possible to obtain a pure phase of copper ferrite (the product is contaminated with the oxides CuO and a-Fe 2 O 3 ) even after triple washing with hot water and then ethanol and acetone, followed by calcination at 700°C. More careful washing and longer firing at temperature 800 -1200°C were required for complete formation of cop¬ per ferrite [9].…”