Synthesis, characterization and studies on magnetic and electrical properties of Mg ferrite with Cr substitution

Physical, electrical and magnetic properties of nano-sized Co-Cr substituted magnesium ferrites

“…5 Study of dc-electrical, dielectric and magnetic properties of ferrite materials provides valuable information about the conduction mechanism and magnetic state of the ions. Doping of MgFe 2 O 4 with one or several metals to alter its properties is considered the best method to modify the properties of ferrites, as was done recently with Cr 6 and Ca. 7 However, studies on doping with metallic binary mixture at iron and magnesium sites have been rarely reported.…”

Effect of Tb substitution on structural, magnetic and electrical properties of magnesium ferrites

“…Magnesium ferrites are pertinent magnetic material and are used in variety of applications; transformers, magnetic core coils and ferrofluids. This ferrite is also used in achieving thermal coagulation therapy, in which tumors are locally heated by the application of an alternating magnetic field [5,6]. The rare earth substituted Mg-ferrites having high resistivity are suitable candidates for high frequency applications.…”

Chromium Substituted Cobalt Ferrites by Glycine-Nitrates Process

“…According to literature, the increase of the Cr 3+ leads to the gradual transition from an inverted spinel structure to a normal one. [4,14,31,32] Mössbauer Spectroscopy Figure 5 (a-d) shows the room temperature Mössbauer spectra of the samples CoFe2-xCrxO4 (x = 0; 0.5; 1.5; 2) together with the computer fit (continuous) lines, under the hypothesis of Lorentzian line shape. In order to understand the Mössbauer results we have to remember that in AB2O4 spinels every A-site (tetrahedral) iron ion is surrounded by 12 B-site (octahedral) next nearest neighbours and each B-site iron ion is bounded by six A-site nearest neighbours.…”