COMPARISON OF ELECTRON-BEAM AND PULSED-LASER IRRADIATION EFFECTS IN FE80B20

The effects of high-energy electron beam and pulsed excimer laser irra diation on the magnetic properties of Fe80B20 amorphous alloy are inve stigated by means of transmission and conversion electron Mossbauer sp ectroscopy (CEMS) and scanning electron microscopy (SEM). Both types o f irradiation were found to induce changes in the magnetic anisotropy of Fe80B20, but the influence of high-energy electron beam irradiation was weaker. Depending on the number of applied laser pulses and repet ition rate, controlled magnetic anisotropy and/or relaxation of intern al stresses could be obtained by excimer laser irradiation. The presen ce of molten zones subsequently solidified and of laser-induced intern al stresses supports the model of closure domain structure.