Cobalt zinc ferrite nanopowder is one of the soft ferrites used in electronic devices such as transformer cores, electric motors, and generators. In its applications, it is subjected to alternating magnetic fields, and should, therefore present low energy losses.

Spinel ferrite nanoparticles have attracted much attention because of their electronic, magnetic, and catalytic properties, all of which are different from those of their bulk counterparts. Among spinel ferrites, Cobalt zinc ferrite nanopowder has an inverse spinel structure.

Cobalt zinc ferrite nanopowder has been widely studied due to its high electromagnetic performance, excellent chemical stability, mechanical hardness, high coercivity, and moderate saturation magnetization, which make it a good candidate for the electronic components used in computers, recording devices, and magnetic cards. These properties are dependent on chemical composition and microstructural characteristics, which can be controlled in the fabrication and synthesis processes.

Magnetic nanoparticles (NPs) has been attracted the scientific society because they offer promising applications in the biomedical field such as genetic screening, targeted drug delivery, ferrofluids, magnetic resonance imaging, magnetic hyperthermia, radiation cancer therapy, and medical diagnostics. Similarly, Cobalt zinc ferrite can be easily operated by applying an external magnetic field. The colloidal stability and targeting of the nanostructure can be improved with higher the sensitivity of the nanoparticles which depend on the surface area to volume ratio.