Abstract
The effect of annealing and applied stresses on the magnetic properties and giant magneto-impedance effect in as-cast and cold drawn FINEMET wires has been studied. The results show major changes in the evolution of the magnetic permeability, coercivity, and magneto-impedance response with the annealing and cold drawing stages. These changes have been explained considering the structural transformations, intrinsic, applied, and drawing-induced stresses, as well as their effect on the global magnetostriction of the wires. The observed sensitivity to applied stresses recommends this class of cold drawn nanocrystalline wires for applications in miniaturized magnetic sensors with enhanced sensitivity.
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