The magnetostriction and stress dependence of the magneto-impedance effect in ribbons of amorphous

Amorphous ribbons of have been stress annealed in order to study the influence of magnetostriction on the magneto-impedance effect and its behaviour with applied tensile stresses. Magnetostriction is shown to be an important parameter that can be used to regulate the magneto-impedive response, as well as permeability and induced anisotropy. The amorphous ribbons change their saturation magnetostriction constants depending on the annealing parameters, between and and exhibit high values of the sensitivity to the applied magnetic fields in the magneto-impedance measurements, up to in the unstressed state and up to in the case of applying a 130 MPa tensile stress, at a frequency of 1 MHz.