Synthesis and Characterization of Europium Doped Nickel Zinc Cobalt Ferrite

Abstract

The present work is focused on the influence of  europium(rare earth) doped Ni-Zn-Co ferrites.The ferrite sample of the composition Ni_0.5Zn_0.3Co_.2Eu_xFe_2-xO₄(where x= 0.00,0.02,0.04,0.06,0.08,0.10) was synthesized using conventional solid-state reaction method from the oxide powders of Ni,Zn,Co,Eu and Fe.Effects of ferrite contents on the structural,electrical,magnetic and dielectric properties were thoroughly investigated.The structural properties and phase identification were studied by using X-ray diffraction(XRD) and the analyses found spinel cubic structure for ferrite samples.XRD pattern of NZCEF  has been introduced with EuFeO₃ secondary peak.The lattice parameter initially decreased slightly then increased with Eu concentrations(max at x=0.08).The porosity was found decreasing from 45.43% to 39.28% as the ‘x’ was increased from 0.02 to 0.10.FTIR analyses confirmed the metal-oxygen bonds in ferrite structures.The average grain size measured by SEM was found slightly increasing and maximum at x=0.08.VSM was used to calculate the room temperature M-H loop and showed that magnetization was increased further with increasing NZCEF.For x= 100%,the saturation magnetization was found to be maximum.The real part of relative permeability was maximum at x=0.02 and then decreased with additional content of x.The frequency dependent real part of relative permittivity(ε) was maximum for pure ferrite and decreased with europium.On the other hand,the resistivity(ρ) had the maximum values for x=0.10 and minimum for pure ferrite.From the observed magnetic, dielectric and electrical properties, the optimum content of composition for this material can be found which makes it a good candidate for potential applications in storage device, magnetic sensors and spintronic devices.

• Supervision