Giant stress-impedance effect in Fe71Cr7Si9B13 amorphous wires

Abstract The giant stress-impedance (SI) effect in as-received and furnace annealed Fe71Cr7Si9B13 amorphous wires is studied. Samples were annealed at temperature of 460 °C for times between 0.3 and 300 min to remove internal stresses. The results show that the magnetoimpedance and SI effect change sharply with annealing and a maximum stress-impedance ratio of 255% is observed in the wire annealed for 10 min under an applied tensile stress of 250 MPa.

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