MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK, vol.47, no.1, pp.53-63, 2016 (Journal Indexed in SCI)
Ferrites are magnetic ceramic materials which have additional metallic ion in ferrous oxide compounds. Ferrites are usually classified as soft or hard ferrites. In this study, characteristics and magnetic properties of magnetic materials having NiO1-xZnOxFe2O4 structure were investigated. Mechanical mixing of high purity NiO, ZnO and Fe2O3 powders were done to obtain homogenous NiO1-xZnOxFe2O4 powder mixture for x = 0.15, x = 0.50 and x = 0.85. These powder mixtures were pressed using hydraulic press machine and then subjected to sintering at same temperatures of 1000 degrees C for 1 hour. Obtained specimens were analyzed with scanning electron microscopy (SEM) imaging and energy dispersive X-ray fluorescence (EDXRF) technique for the investigation of structural analysis; magnetic properties were determined using vibrating sample magnetometer (VSM). However, effects of composition, specimens and Zn% element in magnetic materials after energy dispersive X-ray fluorescence on maximum magnetic moment (M-s) were analyzed using Taguchi orthogonal array design of experiments technique. The study indicates that Zn% element is the main process parameter that has the highest statistical influence on maximum magnetic moment. However, another parameter, composition, also has a significant effect on maximum magnetic moment. Then, Zn-content was found to have a significant influence on the magnetic properties of the system.