Effect of heat treatment on impedance behavior in nearly-zero magnetostriction (Co(0.95)Fe(0.05))(72.5)Si (12.5)B(15) amorphous wire

Effect of current annealing without and under torsion stresses on driving current amplitude dependence of an electrical impedance has been studied in nearly-zero magnetostrictive (Co(0.95)Fe(0.05 ))(72.5)Si(12.5)B(15) amorphous wires. Application of the torsion during measurements or induction of the helical induced anisotropy by the current annealing under torsion results in drastic decrease or even disappearance of such dependence. Observed dependencies have been interpreted in terms of effect of helical induced anisotropy on magnetic permeability tensor