Development of Loss-less High Frequency Ni-Zn Ferrites

By making careful choice of chemical compositions and preparatory conditions, poly crystalline high saturation magnetisation nickel-zinc ferrites with fixed quantity of titanium and varied quantities of indium have been studied to examine their utility for high frequency power applications. Preliminary results indicate definite improvements in resistivity and saturation magnetisation, thus contributing to minimise core losses- an important requirement for the defined purpose. Further measurements are underway. The present results are explained by discussing the possible mechanisms responsible for the observed positive variations.