Development of M–NiFe2O4 (Co, Mg, Cu, Zn, and Rare Earth Materials) and the Recent Major Applications

This study extensively concentrates on recent industrial applications like photoluminescence, photocatalytic, corrosion protection, and sensors using spinel ferrites; this review provides a basic overview of the many synthesis methods, such as co-precipitation, sol–gel, hydrothermal, solid-state etc., and a detailed discussion of pure and doped nickel ferrites. Spinel ferrite’s features would change according to the synthesis method used including the magnetic, electrical, mechanical, and chemical properties. Some significant discoveries in nickel ferrite research are summarised and tabulated in this review study. This work also involves the study of spinel ferrites, which explains the classifications of spinel ferrites and their structural details, covering spinel ferrites and their potential applications. Nickel–spinel ferrites are also studied with different derivatives using other doping agents. The several applications where nickel and substituted nickel ferrites are also crucial are briefly covered in this Review Article.