[en] Amorphous Fe_73.5Cu₁Nb₃Si_13.5B₉ alloy was annealed under stress by DC Joule-heating to induce magnetic anisotropy. The magnetic properties of the treated samples were examined by dynamic hysteresis loops, longitudinally driven giant magneto-impedance effect and Moessbauer spectra. The experimental results show that nano crystallization occurs in the amorphous alloys when the current density is above 4.11 x 10⁷ A/m², and the annealed samples will be induced transverse magnetic anisotropy under suitable current and stress. The magnetic anisotropy increases with the increasing of annealing current density, which is closely related to the amount of α-FeSi nanocrystalline in the alloy