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


YAGMUR V., ATALAY F. , BAYRİ N. , ATALAY S.

5th Moscow International Symposium on Magnetism (MISM 2011), Moscow, Rusya, 21 - 25 Ağustos 2011, cilt.190, ss.243-246 identifier identifier

Özet

Ni80Fe20/Cu composite wires were produced under torsion using electrodeposition method. The total length of the magnetic film deposited onto 50 mu m Cu wire is 3 cm and the thickness of the magnetic layer is about 10 gm. All samples showed single peak in magnetoimpedance (MI) curves. The magnitude (Delta Z/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.