Abstract
Ni0.8-xCuxZn0.2Fe2O4 spinel type ferrite nanoparticles have been synthesized by citrate precursor method. These nanoparticles were then given heat treatment using microwave and conventional sintering techniques. Various characterizations using X-ray powder diffraction (XRD), scanning electron microscope (SEM), LCR meter, and B-H loop tracer were carried out on the sintered specimens. The XRD spectra of these ferrites confirmed the formation of spinel structure. The average crystallite size calculated using Scherrer’s formula was found to be in the nanometer range, its value varying from 33 nm to 39 nm. Microwave sintered samples exhibited superior electrical and magnetic behaviour over their conventionally sintered counterparts. Feasibility of low temperature synthesis and promising properties will render these ferrites suitable for multilayer chip inductor applications.
Highlights
Spinel nanoferrites have generated enormous interest in the scientific community throughout the world due to their unique properties
The same explanation will apply to the crystallite size as higher values of crystallite size are reported for the conventionally sintered samples [16] than the corresponding microwave sintered ones
The average crystallite sizes of all the samples are found to be in the range of 33 nm–39 nm clearly indicating that nanosized crystals can be effectively synthesized by the citrate precursor method
Summary
Spinel nanoferrites have generated enormous interest in the scientific community throughout the world due to their unique properties. For the present investigation, Cu substituted NiZn ferrites have been synthesized using the citrate precursor method This synthesis method has been reported as a versatile method for obtaining nanocrystalline ferrite particles. It allows homogeneous distribution of ions at the molecular level, good control of stoichiometry, small particle size formation, low temperature synthesis, and high efficiency. Lack of reports on a systematic investigation of the comparison of structural, electrical, and magnetic properties of NiCuZn ferrites sintered by microwave and conventional techniques prompted the present study. A comparative study on the structural, electrical, and magnetic properties of NiCuZn ferrites sintered by microwave and conventional sintering techniques is carried out and their possibilities for MLCI applications will be sought
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