Synergetic implementation of magnetic and electrical characteristics of rGO/Cu0.3Mn0.7Fe2O4 nanocomposites

In this work, a reduced graphene oxide (0, 10, 30, 50 and 70 wt%) functionalized with Cu 0.3 Mn 0.7 Fe 2 O 4 (CMFO) nanocomposites (rGO/CMFO) was successfully prepared by two techniques, namely modified Hummers (rGO) and sol–gel auto-ignition techniques (CMFO). The structure, morphology, magnetic and electrical properties of obtained nanocomposites have been examined using X-ray diffraction technique, Raman radiation spectroscopy, high-resolution transmission electron microscopy and vibrating sample magnetometer. The increase of rGO decreases the particle size of CMFO. It also results in a decrease in the saturation magnetization of the composites from 37.96 to 13.29 emu/g. The coercivity of composites elucidated higher values than those of the pristine composite due to interface interaction between CMFO and rGO. Colossal enhancement in electrical conductivity, dielectric constant and dielectric loss occurred with increasing the rGO content. These results indicate that rGO/CMFO composites can be a good candidate for many electronic applications such as spintronic magnetic storage, high-energy storage device and microwave absorption material.