The Dynamic Effects in Electrodeposited NiFe/Cu Wire with Preliminary Torsion

Abstract:

Ni₈₀Fe₂₀/Cu composite wires were produced under torsion using electrodeposition method. The total length of the magnetic film deposited onto 50 µm Cu wire is 3 cm and the thickness of the magnetic layer is about 10 µm. All samples showed single peak in magnetoimpedance (MI) curves. The magnitude (ΔZ/Z) % are 260%, 235% and 119% for samples produced under 22.4, 44.8, 89.7 rad/m torsion values, respectively at driving frequency of 160 kHz. MI effect magnitude decreases with increasing applied torsion during the electrodeposition process. A linear change in the second harmonics of output voltage from wire ends as a function of applied magnetic field (coil-less fluxgate effect) was observed in all sample. The sensitivity of coil-less output increases with increasing torsion and maximum sensitivity was observed in the sample produced at 89.7 rad/m torsion.

• Periodical: Solid State Phenomena (Volume 190)
• Pages: 243-246
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.190.243
• Online since: June 2012
• Authors: V. Yagmur, F.E. Atalay, N. Bayri, S. Atalay
• Keywords: Coil-Less Fluxgate, Electro-Deposition, Magnetic Field Sensor, Magnetic Material, Magnetoimpedance, Torsion

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