“…Ferrofluids define a unique class of ferromagnetic liquids in which an inorganic magnetic solid is homogeneously dispersed in a liquid carrier, thus forming a stable colloidal dispersion that exhibits magnetic response when a magnetic field is applied . The availability of magnetic fluids constitutes a topic of interest not only to colloid chemists − but also to the observation of a number of novel phenomena and applications, including magnetocaloric power cycle, magnetoviscous effect, magnetic imaging, magnetic and magneto-optic data storage media, biology and medicine, formation of mono- or multilayered magnetic films, and others.…”