Investigation of Sol-Gel Synthesized Cobalt Ferrite (CoFe2O4) /Egg Shell Powder for Transformer Core Materials

Abstract

Cobalt ferrite (CoFe2O4) is compatible as a core material for transformers and inductors. Sideways with size and size dispersity, fixings engineering about core- shell shape, crystallinity, surface morphology and blend derivatives elasticities an extensive variety of probabilities for elementary studies as well as for extension and revolution. To increase the resistivity and decrease the eddy currents for working at high frequencies, egg-shell powder is introduced to increase the number of pores, surface area, pore size and volume. Egg shells cover 96% of calcite, with additional residents like magnesium, phosphates, and organic materials. The current study is aimed to get large resistivity of the developed Cobalt ferrite (CoFe2O4) /eggshell powder Composite. Ferrite nanoparticles have some electronic and magnetic features which are quite different from their bulk counter parts . In all metal ferrites, zinc, nickel, and cobalt ferrites are mostly applied for different technological applications such as transformer core materials, multilayer chip inductors (MLCIs) and dielectric resonators etc. . In the current study cobalt ferrite (CoFe2O4)/eggshell powder composite is prepared using sol-gel method due to its many advantages over other methods like coprecipitation, solid state reaction method, ball milling, micro emulsion, etc. After synthesis, the characteristics of developed magnetic core is investigated using XRD, SEM, EDX and VSM. Moreover, its electrical resistivity, permittivity and permeability is investigated using the two-probe method and impedance spectroscopy, respectively.