Comparative study of the giant stress impedance behavior of commercial amorphous ribbons for strain sensing applications

The giant magnetoimpedance (GMI) and stress impedance (GSI) behaviors of amorphous ribbons composed three commercially available materials (Co 66 Si 15 B 14 Fe 4 Ni 1 , 81 13 3.5 C 2 40 + 19 Mo 1−2 ) with differing saturation magnetostriction constants [Formula: see text] Young's moduli ( E) were studied under longitudinal stress/strain. linearity the ribbons' GSI responses gauge factors was measured to create a figure merit compare their stress/strain sensing performance for strains up ɛ = 10 × −3 . We observed that ribbon displayed best low < ), whereas Co higher ). conclude suitability material in any given strain regime has complex dependence on both E, former which dictates absolute magnitude variation exhibit (i.e., dynamic range), while E control how impedances vary applied strain.