The Effect of Sintering Atmosphere on the Magnetic Properties of MnZn Ferrites

Abstract

An appropriate method to control the oxygen content in the sintering and cooling atmospheres for the preparation of ferrites has been reported previously. In this paper the magnetic properties of Mn-Zn ferrites prepared by this method with various cooling atmospheres are discussed. The temperature dependence of permeability, quality factor Q and disaccommodation are dependent on the oxygen content in the atmosphere for the cooling process. When the secondary peak of permeability exists in the neighbourhood of room temperature, the permeability is influenced substantially by the cooling atmosphere. Quality factor Q and disaccommodation increase with the oxygen content in the cooling atmosphere.