MAGNETIC-BEHAVIOR MODIFICATION OF FE C COMPOSITION-MODULATED FILMS UNDER SHORT-PULSE HEAT ACTION/

The formation and evolution of the ferromagnetic phase in FexC1-x syst ems at thermally induced agglomeration of Fe atoms is studied. A trans formation into the ferromagnetic phase possesses an essentially thresh old feature. As assumed, this transformation is a result of iron clust er coalescence and their diffusion growth. The duration of the transfo rmation in composition-modulated Fe/C does not exceed a few nanosecond s at a temperature of 200-degrees-C, thus providing the opportunity to produce magnetic microparticles by simple enough methods (such as las er projection printing). The properties of laser-printed magnetic micr oparticles as well as their possible utility as reversible cells of me mory are discussed.