Study of the Bulk Magnetic and Electrical Properties of MgFe<sub>2</sub>O<sub>4</sub> Synthesized by Chemical Method

Abstract

Nanocrystalline Magnesium ferrite has been prepared by chemical co-precipitation technique. Structural characterization has been performed by X-ray diffraction. Formation of ferrites has also been studied by using FTIR. Frequency dependence of real and imaginary part of initial permeability has been presented for the samples sintered at different temperatures. Real part of initial permeability, increases with the increase of grain growth. The loss component represented by imaginary part of initial permeability decreases with frequency up to the measured frequency of this study of 13 MHz. Curie temperatures have been determined from the temperature dependence of permeability. Curie temperatures for the samples of this composition do not vary significantly with the variation of sintering temperatures. B-H loop measurements have been carried out by B-H loop tracer. Transport property measurements haven been carried out by electrometer and impedance analyzer.

Investigations of superparamagnetism in magnesium ferrite nano-sphere synthesized by ultrasonic spray pyrolysis technique for hyperthermia application

“…Lattice parameter also decrease with decreasing crystallite size which is in agreement with the reported [37].…”

Synthesis, microstructure and magnetic properties of nanocrystalline MgFe2O4 particles: Effect of mixture of fuels and sintering temperature

“…3 shows that impure XRD reflections, which is due to the presence of haematite phase are present after annealing at 600 o C for 2h and only disappears after annealing at 900 o C for 2h. Conventionally, sintering temperature of MgFe 2 O 4 is very high [39]. Therefore, it remains difficult to synthesise phase pure MgFe 2 O 4 spinels especially at low calcinations temperature [40].…”

Preparation and characterization of nanosized magnesium ferrite powders by a starch-gel process and corresponding ceramics

“…To synthesise MgFe 2 O 4 nanoparticles various chemical and physical approaches are reported such as high-energy ball milling [21], sol-gel [22], micelle [23,24], polymerization/coprecipitate [5,25,26] and combustion methods [27]. An electrospinning procedure was published by Maensiri et al [28].…”