Physical Properties Characterization of Mgo.9Mno.lFez04 Soft Ferrite System

Ferrite samples oj the chemical composition Mgo. 9Mno.JFe20 lVere prepared by standard solid state sintering techniqu e. Wet milling for 6 h was employed to get better homogenity. The raw fe rrites were sintered at 10500 efor 24 h using a heating 'rate oj2"C/min. The sintered samples were studied by means oj X-ray diffraction, particle size analysis and Field Emission Scanning Electron Microscope (FESElvf). Density and porosity measurements were done by Archemede 's method. The microstructure l Jl ere rather porous. X-Ray diffractio n analysis confi rmed a single phase cubic structure. Jvfagnetic measurements lJl ere obtained by Physical Properti es Measurement System (PPMS). lvfagnetization results exhibit collinear fe rrintagnetic behavior. The dielectric constant, e' and ss tangent, tall £5 show strong frequency dependence