Multilayer magneto-response cells (MMRC)fabricated on a non-magnetic layer among ferromagnetic [Fe65Co35]5/Cu/[Fe65Co35]5on a flexible substrate (Kapton tape) have been studied by using electronmicroscopy, X-ray diffraction, magnetic and magnetoimpedance measurements. In asimilar cell, these layers have shown previously to have an outstandingmagnetoimpedance (MI) effect performance when the selected growth substrate isa rigid one. Here, this MMRC produces on the Kapton tape and evaluate duringthe using as a magnetic field sensor and the magnetoimpedance characteristicsare analyzed in terms of preparation conditions. For future sensingapplications, this material is a promising candidate for giant magnetoimpedanceeffect with the range of low price and relatively high sensitivity features. Inorder to observe MI effect, the frequency dependence of impedance measurementshas performed as a function of the applied low magnetic field. The impedancevalue of the cells has characterized by using constant 20 mA AC currentsource at low frequencies ranges. Double (out of plane measurement) peakresponses have obtained, showing MI ratios up to % 140 and % 55, theirsensitivities are around 30 %/Oe and 17 %/Oe in the film on Si and Kapton tape, respectively.
展开▼
