High Frequency Magnetoimpedance of FeNi/Cu/FeNi Sensitive Elements with Different Geometries

Stanislav O. Volchkov; Andrey V. Svalov; G.V. Kurlyandskaya

doi:10.4028/www.scientific.net/SSP.152-153.373

Paper Titles

Metamaterials from Amorphous Ferromagnetic Microwires: Interaction between Microwires
p.357

Penetration of Microwave Radiation into and through Metallic Powders
p.361

Domain Wall Dynamics in a Double-Layer Magnetic Film with Different Uniaxial Anisotropy the Layers
p.365

Magnetic Polaritons on the Interface of Superconductor and Ferromagnet
p.369

High Frequency Magnetoimpedance of FeNi/Cu/FeNi Sensitive Elements with Different Geometries
p.373

Pulsed Laser Deposited Y₃Fe₅O₁₂ Films for Magnetostatic Wave Band Pass Filters
p.377

Shear Thickness Modes in a Presence of Magnetoelastic Waves Parallel to a Surface Guided by Ferromagnetic Film
p.381

Microwave Heating of Metallic Powders
p.385

Microwave Properties of Ferromagnetic Nanowires and Applications to Tunable Devices
p.389

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High Frequency Magnetoimpedance of FeNi/Cu/FeNi Sensitive Elements with Different Geometries

Abstract:

In this work magnetoimpedance (MI) behaviour was studied experimentally for Fe19Ni81(175 nm)/Cu(350 nm)/Fe19Ni81(175 nm) sensitive elements deposited by rf-sputtering. A constant magnetic field was applied in plane of the sandwiches during deposition perpendicular to the Cu-lead in order to induce a magnetic anisotropy. Sandwiches with different width (w) of FeNi parts were obtained. The complex impedance was measured as a function of the external magnetic field for a frequency range of 1 MHz to 700 MHz for MI elements with different geometries. Some of MI experimental data are comparatively analysed with finite elements numerical calculations data. The obtained results can be useful for optimization of the design of miniaturized MI detectors.

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