Induced anisotropy and magnetostriction behaviour of an annealed Co–Fe (Co-rich) amorphous wire

Abstract

We present results on the induced anisotropy and magnetostriction constant of a very low magnetostrictive amorphous wire after annealing with an applied stress (stress annealing) which can develop a transverse magnetic anisotropy followed by a subsequent annealing without the applied stress (stress relief) which can eliminate the transverse induced anisotropy. The evolution of the magnetostriction constant with these treatments has also been determined. It changes from a negative value (as-cast) to positive values after stress annealing, while the effect of the stress relief treatment changes the magnetostriction constant towards a saturation value independent of the thermal history of the sample.