Fe₇₀Cr₁₀B₂₀ metallic glass as a new candidate for nuclei of stress and magnetic field sensors

In this work, we present some results concerning the magnetoimpedance and stress impedance in Fe₇₀Cr₁₀B₂₀ ribbons. A high response is obtained at low values of the applied field and stress, making it possible to develop sensitive devices that could detect small values of magnetic fields and/or tensile stresses. Sensitivities, per unit length, to the applied tensile stress of up to 14%/m MPa are measured under tensile stresses of 40 MPa in the case of the annealed sample.