Giant Magnetoimpedance: A Relevant Application of Impedance Spectroscopy


The impedance response of amorphous ferromagnetic wires is measured in the 5 Hz-13 MHz frequency range by applying a small AC current of 1 mA (RMS). A DC magnetic field (in the 0–6.7 kA/m range) is simultaneously applied. The impedance response is analyzed by means of simple series and parallel equivalent circuits. An association of circuit elements and physical parameters of the sample is proposed.

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Correspondence to K. L. Garcia.

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Garcia, K.L., Valenzuela, R. Giant Magnetoimpedance: A Relevant Application of Impedance Spectroscopy. MRS Online Proceedings Library 500, 133 (1997).

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