The effect of axial dc-field on transverse permeability in Co-based metallic glass ribbons

A simple geometrical model is proposed. This model allows to calculate the penetration depth and the mean transverse permeability in magnetic elements of a rectangular cross-section which are used to study the giant magnetoimpedance effect (GMI). As an instance of the use of this model, both the mentioned quantities were calculated for the Co-based metallic glass ribbon using the experimental data obtained for the Co-based metallic glass ribbons. Their evolution with the applied axial dc-field at various frequencies of the ac-current, flowing along the ribbon, is presented. A comparison of the experimental data with those calculated by the model, shows that the latter gives only a qualitative approximation of the measured dependencies.