LAUSR

A new method for magnetic nano- and submicron-scale particle fabrication is proposed. Magnetic particles of Fe 73 Co 27 alloy were produced by a cavitation process directly into three different liquids: distilled water, benzyl alcohol and methyl methacrylate. The dependency between liquid viscosity and average particle size and size distributions are illustrated. The average particle size is found to be 224 nm in benzyl alcohol and 475 nm in methyl methacrylate. Also, assembly with a size of 20–80 nm was successfully separated from the poly-dispersed mixture obtained in distilled water. Fe 73 Co 27 particles obtained by cavitation inherit the perfect crystal structure of the original macro-sample and possess a high value of the saturation magnetization, M s  = 242 emu/g. These particles can be applied for biomedical purposes and as a component of magneto–polymer composites.