Static and dynamic magnetic properties of nanocrystallines finemet ribbons

Summary form only given. We performed an extended investigation of the magnetic and structural properties of Fe/sub 73.5/Si/sub 15.5/B/sub 7/Nb/sub 3/Cu/sub 1/ amorphous (AR) and nanocrystalline (NR) ribbons. The effect of the annealing temperatures T/sub a/ was explored on a set of NR prepared in the range of 490°C ≤ T/sub a/ ≤ 560°C. Structural investigations confirmed that, whatever T/sub a/ the composition of the nanocrystallites is α-Fe/sub 80/Si/sub 20/. T/sub a/ affects the volume percentage, and the grain size distribution of the nanocrystallites, both parameters were determined precisely. The static magnetic properties were measured at T=2 K, for 300 K