Abstract

AbstractThe Ni0.4Cu0.2Zn0.4ferrites with different concentrations of Cr3+were synthesized at a low temperature (450°C) using sol–gel auto-combustion method. The X-ray diffraction analysis of the samples confirms the formation of a single-phase cubic spinel structure. The lattice constant decreases from 8.331 to 8.253 Å with an increase in Cr3+substitution. Bulk density decreases from 4.95 to 4.71 gm/cm3whereas porosity increases from 9.34% to 14.76% with an increase in Cr3+substitution. Transmission electron microscopy was adopted to determine the particle size. Particle size decreases from 19 to 13 nm with the addition of Cr3+ions. Saturation magnetization, coercivity, and other hysteresis parameters were measured using a vibrating sample magnetometer at room temperature with a maximum magnetic field of 8 kOe. Magnetization decreases from 62 to 48 emu/g, whereas coercivity increases from 65 to 180 Oe. The direct current (DC) resistivity increases from 3.62 × 106to 4.21 × 106Ω cm with Cr3+contentx. The dielectric constant (ε′) decreases with increasing concentration of Cr3+ions.

Highlights

  • Nanoferrite materials eclipse, captivating properties that are analogous to or preferential to those of their bulk counterparts, as they demonstrate extraordinary magnetic properties such as single-domain behavior, superparamagnetism, and diminished magnetization

  • For the sake of sharp perusal and to exploit the potential and possibilities associated with nanomaterials, the main aim is to invent well-defined, monodisperse structures of predictable mensuration, superiority, and morphology through an ingenious synthesis

  • We have reported our results of Cr3+ substitution in Ni-Cu-Zn ferrite nanoparticles with the chemical formula Ni0.4Cu0.4Zn0.2CrxFe2−xO4 (x = 0.0 to 1.0 in steps of 0.25)

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Summary

Introduction

Nanoferrite materials eclipse, captivating properties that are analogous to or preferential to those of their bulk counterparts, as they demonstrate extraordinary magnetic properties such as single-domain behavior, superparamagnetism, and diminished magnetization. Ni-Cu-Zn comes under the umbrella of soft ferrites and is chemically symbolized by MFe2O4. For the sake of sharp perusal and to exploit the potential and possibilities associated with nanomaterials, the main aim is to invent well-defined, monodisperse structures of predictable mensuration, superiority, and morphology through an ingenious synthesis. Ni-Cu-Zn ferrites are well-established soft magnetic materials for multilayer chip inductor (MLCI) applications because of their high electrical resistivity, hard mechanical properties, high Curie temperature, and environmental stability. Studies have been carried out on the Ni-Cu-Zn ferrite nanoparticles [1,2] though no studies of Cr3+

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