Abstract
In this paper, the meander NiFe/Cu/NiFe film is fabricated by MEMS technique and the giant magnetoimpedance (GMI) effects in both transverse and longitudinal directions are studied in the frequency range of 0.1–40 MHz. Upon increasing the magnetic field from 0 to 150 Oe, the effects in both directions show the single peak variation tendency, which is attributed to the deflection of anisotropy from the transverse direction. Compared with the GMI peak values of 11.2% and 3.0% in a longitudinal straight-line section, the GMI effects in meander structure are greatly improved and it could be up to 37% and 16.7% for the longitudinal and transverse results, respectively. The external inductance resulted from the meander shape is mainly responsible for the improvement.
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