Effect of sintering conditions on resistivity and dielectric properties of Mn-Zn ferrites

Resistivity and dielectric properties of the Mn-Zn ferrite, Mn_xZn_(1-x)Fe₂O₄, have been studied near different sintering conditions to optimize the sintering schedule for a specific application. Variable sintering parameters studied include sintering time from 2 h to 12 h duration at 1250°C. In view of the different applications of ferrites in the telecommunication field, this work is devoted to the study and the understanding of the transport mechanism in Mn-Zn ferrites in the kHz frequency range. Particles of Mn-Zn ferrite were synthetized by a new chemical coprecipitation method, that provided small particles (<0.5 μm), with very good magnetic properties. It is known that different factors contribute to the dielectric response, including densification of samples. Possible mechanisms contributing to conduction processes in ferrites are discussed