Abstract
AbstractLongitudinal and transverse giant magnetoimpedance (GMI) effects in micropatterned ribbons (Metglas® 2714A) with meander structure are investigated. The maximum longitudinal GMI ratio of the ribbons is 180.4% and it presents to HL = 10 Oe and an AC frequency f = 20 MHz. In the range of 0–10 Oe, the GMI sensitivity of ribbons is 8.1%/Oe at 20 MHz. The maximum transverse GMI ratio is much less than the longitudinal one and the position of GMI extreme value is corresponding to higher magnetic field. The difference between the longitudinal and the transverse GMI effect is due to two main reasons: one is the easy axis deviates from the transverse direction of the sample; another is the demagnetizing factor D⊥ effect on the longitudinal permeability. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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