MAGNETIC-PROPERTIES OF NANOSTRUCTURED IRON FILMS OBTAINED BY LOW-ENERGY NEUTRAL CLUSTER BEAM DEPOSITION

Nanocrystallized films of iron have been elaborated using for the firs t time the Low Energy Cluster Beam Deposition techniques. Structural c haracterizations have shown that the grain size distribution is very n arrow and centered around 5 nm. The grain shape is almost spherical. M oreover, the density of the films is around 62% of bulk iron. Magnetic properties of the samples were studied using Mossbauer spectroscopy, ferromagnetic resonance and SQUID magnetometry. Experimental results h ave been quantitatively interpreted in the framework of the Random Ani sotropy Model, with an exponential correlation of anisotropy direction s extending up to 5 nm. In particular, the anisotropy and inter-grains exchange coupling energies have been determined.