Studies on Permeability of Mn-Zn Soft Ferrites on Variation in Its Basic Composition

Abstract

In response to the current demand for size reduction of electronic devices, the development of compact and efficient switched-mode-power supplies has received considerable attention. Power supplies being an integral part of electronic equipments from computers and microprocessors to TV and video tape-recorders, the demand for ferrite cores, which are an essential component of the switching power supplies, is continuously on the rise. This can be achieved by low loss, High Permeability Mn-Zn Ferrites. In the present work effort have been made to study permeability spectrum of Mn-Zn soft ferrite cores by variation in basic composition at a constant doping of Bi2O3. It was studied through this experimentation that how a wrong stociometric composition can lead to loss in permeability. It was found that for a composition Fe2O3 52.510 mol%, Mn2O3 24.390 mol%, ZnO 23.100 mol% and Bi2O3 0.02 wt % , out of prepared samples the permeability, showed its maximum in comparison with other prepared samples.