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Giant magnetoimpedance effects in patterned Co-based ribbons with a meander structure

✍ Scribed by Chen, Lei ;Zhou, Yong ;Zhou, Zhi-Min ;Ding, Wen

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
357 KB
Volume
206
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

Longitudinal 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 H~L~ = 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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