Iron oxide and its derivatives have been receiving importance and broad
scale applications during the last two decades, due to their specific characteristics and
use. There are many types of ferrous oxides have been characterized, whereas iron (III)
oxide (Fe2O3), Fe(II)-deficient magnetite (Fe2O3, γ-Fe2O3) and ferrous-ferric oxide
(Fe3O4) are, indeed, the relevant types of untainted ferrous oxides. Many hydroxides,
such as ferric hydroxide (Fe(OH)3) and oxyhydroxide (Fe(O)OH), are also of industrial
importance, being precursors of pure or complex oxides. As for the compound iron
oxides, ferrites are essential ferromagnetic materials. Among all the ferrites, the iron
oxides and ferrite magnetic nanoparticles with appropriate surface chemistry are
prepared either by wet chemical methods such as colloid chemical or sol-gel methods
or by dry processes such as vapour deposition techniques. The conventional
granulometric technique does not form nanoparticles (NP), and is often desired to
assemble or pattern ferrous oxide nanoparticles to give magnetic or optogenetic
functions. This review summarizes the comprehensive study of ferrous based
nanomagnetic particles preparation together with a comparison of synthesis techniques
and their characterization, particularly regarding magnetism properties, particle size
and morphologies. Moreover, in this review, a recent study of modified microwave
assisted system for nanomagnetic particles preparation has also been highlighted.
Keywords: Applications, Iron oxide, Magnetic nanoparticles, Method.
