Microstructure and properties of Mg–Zn ferrite as a result of sintering temperature

This paper presents results of investigations on property changes of Mg–Zn ferrite used commercially for deflection yoke cores sintered at temperatures ranging from 900 to 1400 °C. Physical and mechanical properties were determined: apparent density, strength, elastic properties. The most important magnetic properties as initial permeability, coercivity, saturation magnetic flux, retentivity and Curie point temperature were determined. Microstructure evolution during sintering was observed and compared with changes of mechanical and magnetic properties as well as electrical conductivity. Presented results could be helpful in optimisation of ferrite heat-treatment conditions.