The microstuctural, Mössbauer and magnetic properties of MgGd0⋅1Fe1⋅9O4ferrite processed by solid state reaction technique

The excellent combination of magnetic, electric and dielectric properties of Gd-Mg ferrites can be used to fulfill the future demand for high-frequency applications. MgGdxFe(2-x)O(4) (x=0.0 and x=0.1) ferrites, with improved initial permeability and extremely low relative loss factor (RLF), are prepared by solid state reaction technique. The structural studies were made by using XRD which confirm the single-phase spinel structure. The magnetic properties such as initial permeability and relative loss factor with frequency, in the range 0.075-30 MHz, at room temperature have been investigated. Mossbauer spectra of all the samples exhibit normal Zeeman split sextets due to the ferromagnetic behavior of the ferrites. The values of RLF in the presently studied ferrites at room temperature are of the order of 10(-4) - 10(-5). Low values of RLF exhibited by these ferrites suggest its utility in inductor and transformer applications. The mechanisms responsible to these results have been discussed in detail in this paper.