LAUSR

We present our experimental results on optimization of the magnetic softness in Fe-rich magnetic microwires by stress annealing. It is found that the magnetic softness and magnetoimpedance effect of the Fe-rich microwires can be considerably improved by annealing. The hysteretic properties and magnetoimpedance are considerably affected by the tensile stress applied during the annealing. Experimental dependencies are attributed to changes in magnetic domain structure of magnetic wires in particular decrease of the inner axially magnetized core volume in expense of increase of the outer domain shell with transverse magnetization orientation. Observed stress-induced anisotropy and related changes of magnetic properties are discussed considering internal stresses relaxation and “back-stresses.”