Giant Magneto-Impedance Effect in Amorphous Wires

Chiriac, H.

doi:10.1007/978-94-010-0959-1_5

Modern Trends in Magnetostriction Study and Application 2001

DOI: 10.1007/978-94-010-0959-1_5

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Giant Magneto-Impedance Effect in Amorphous Wires

H. Chiriac

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Cited by 3 publications

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Domain wall permeability limit for the giant magnetoimpedance effect

Barandiarán

Garcı́a-Arribas

Muñoz

et al. 2002

Journal of Applied Physics

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The magnetoimpedance (MI) effect is based on the change of inductance and resistance under the effect of an external magnetic field. In bulk homogeneous wires or ribbons these two components of the impedance are related to the penetration depth of the electromagnetic field in the material. From simple considerations it is shown that the maximum MI ratio is then proportional to the square root of the relative permeability of the material. That limit is reached for frequencies at which the penetration depth is of the order of the transverse dimensions of the sample. At low operating frequencies, typical of thick geometries, the permeability is limited by the microeddy currents associated with domain wall displacements. The permeability relaxation equivalent to these local eddy currents can be calculated and used in the classical expressions for MI. The real part of the permeability is highly reduced at the relaxation frequency and gives rise to a decrease of the inductance, while the imaginary part contributes to the resistance, with a maximum at the same frequency.

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Domain wall permeability limit for the giant magnetoimpedance effect

Barandiarán

Garcı́a-Arribas

Muñoz

et al. 2002

Journal of Applied Physics

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Radio Frequency-Based Diagnostics for Superconducting Magnets

Marchevsky

Lee

Teyber

et al. 2023

IEEE Trans. Appl. Supercond.

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Influence of magnetization processes and device geometry on the GMI effect

et al. 2002

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Giant Magneto-Impedance Effect in Amorphous Wires

Cited by 3 publications

References 53 publications

Domain wall permeability limit for the giant magnetoimpedance effect

Domain wall permeability limit for the giant magnetoimpedance effect

Radio Frequency-Based Diagnostics for Superconducting Magnets

Influence of magnetization processes and device geometry on the GMI effect

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