Iron oxides are chemical compounds which have different polymorphic forms, including γ-
Fe2O3 (maghemite), Fe3O4 (magnetite), and FeO (wustite). Among them, the most studied
are γ-Fe2O3 and Fe3O4, as they possess extraordinary properties at the nanoscale (such as
super paramagnetism, high specific surface area, biocompatible etc.), because at this size
scale, the quantum effects affect matter behavior and optical, electrical and magnetic
properties. Therefore, in the nanoscale, these materials become ideal for surface …