Concentrated magnetic fluids on water and short chain length organic carriers

Magnetic fluids on methyl-ethyl-ketone, ethylic ether, i-propanol, i-butanol and water were prepared applying double layer of surfactants to ensure the colloidal stability of samples of saturation magnetization up to 50 kA/m. Magneto-optical, magnetic, rheological and magnetorheological measurements evidence the different behaviour of samples depending on the polarity of carriers, concentration and combination of surfactant bilayers.