Stress-current annealing performed on Fe{sub}73.5Cu{sub}1Nb{sub}3Si{sub}13.5B{sub}9 amorphous wire results in ultra-soft "nanocrystalline" wire with an additional very homogeneous transverse magnetic anisotropy. The giant magnetoimpedance (GMI) response of this treated wire has been investigated in a range of ac current (I{sub}(ac) = 0.2 to 20 mA) and frequency (f = 0.01 to 1 MHz). A maximum GMI ratio as high as around 150 is reported. The magnetoelastic behavior and in particular the influence of applied tensile and torsional stresses, has been analyzed in connection with GMI. From the applied stress dependence of the static field H{sub}m at which the maximum impedance is observed, the values of induced anisotropy field (H{sub}(ind) = 3.46 and 3.14 kA/m) and magnetostriction (λ{sub}s = 1.42 and 1.59 × 10{sup}(-6)) are determined.
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