The UV-Vis Transmission Spectra of Ferromagnetic Fluids

In previous studies, it was found that a loss of magnetic fluids aggregation stability is possible upon dilution. It leads to the formation of large aggregates and their subsequent precipitation. As a result, optical properties of magnetic fluids, in particular absorption and scattering, change. In this work, we used simple and effective scheme for recording the absorption spectra of magnetic fluids. As a result of our study, we measured UV-Vis transmission spectra of ferromagnetic fluids of different concentrations and with different types of stabilization. The correlation between the solution concentration and its absorption spectrum was established. Based on the data obtained, we can say that the light transmission decreases with increasing concentration. We also observed a decrease in transmission for liquids more prone to aggregation. Our data allow us to expand our understanding of the optical properties of magnetic fluids and can contribute to their more effective use in magnetic field-controlled information transmission systems, as well as other fields of application of the optical properties of magnetic fluids.