“…There are numerous kinds of nanoparticles that considerably are noticed in MH such as iron oxide (MFe 2 O 4 , M = Co, Fe, Ni, Mn,…) NPs, alloy (FeCo, FePt,…) NPs, and multifunctional NPs of a core/shell‐type . Among these NPs, the synthesis and properties of cobalt ferrite (CoFe 2 O 4 ) have been studied recently by numerous researchers, because of their widely utilization in biomedical applications due to their properties of large magneto crystalline anisotropy, high Curie temperature (~793°C), high coercivity ( H c ), moderate saturation magnetization ( M s ), low cost, and chemical stability . Based on these excellent properties, CoFe 2 O 4 is used in high frequency magnets, microwave absorbers, magnetic catalysis, magnetic bulk cores, magnetic resonance imaging, and drug delivery …”