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Free and open to the public


Math and Physics Building, Room 318


Progress has been made recently in synthesis of ferromagnetic L10 structured FePt nanoparticles and other types of hard and soft magnetic nanoparticles. By applying the newly developed annealing techniques including the "salt-matrix annealing" technique, monodisperse ferromagnetic nanoparticles with well controlled size and shape can be produced. The ferromagnetic particles with few nanometer size show very high room-temperature coercivity. Size dependent magnetic and structural properties of the nanoparticles have been systematically studied. This kind of ferromagnetic nanoparticles has great potential applications in magnetic recording media and biomedicine, and can be also used as building blocks for advanced bulk and thin film magnets.