Structural, Magnetic and DC Electrical Resistivity Studies of Copper Substituted Mg 0.6- x Zn 0.4 Cu x Fe 2 O 4 Ferrite System

Ferrites made of copper substituted Mg 0.6- x Zn 0.4 Cu x Fe 2 O 4 ( x = 0.0, 0.1, 0.2 and 0.3) are extremely resistive and magnetic materials. They were produced using the ceramic method, and their structural, compositional, morphological, and functional characteristics were assessed using XRD, SEM, FT-IR, vibrating sample magnetometer (VSM), and dc electrical resistivity, respectively. They belong to the Fd-3m space group and have a spinel structure. After being calcined at 1000 °C, their particle size ranged from 1 to 1.56 μm. With the help of FT-IR analysis, which had absorption bands in the ranges of 570–576 cm −1 and 424–430 cm −1 for higher and lower frequency, respectively, their spinel structure was confirmed. The coercivity coefficient ranges from 73.33 to 154.7 Oe depending on the composition. The highest DC electrical resistivity was found to be 10 6 Ω-cm at x = 0.1.