Influence of the geometry on the performance of GMI in meander configuration

The effect of geometry on Giant Magnetoimpedance effect (GMI) in a meander structure composed of three amorphous magnetic ribbons ((Co0.94 Fe0.06)72,5 Si12.5 B15; 20 mm length) connected electrically in series is analyzed. The impedance behavior under the meander configuration is compared with the s...

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Bibliographic Details
Published in:	Sensors and actuators. A. Physical. 2022-06, Vol.340, p.113520, Article 113520
Main Authors:	Beato-López, J.J., Lete, N., García-Arribas, A., Gómez-Polo, Cristina
Format:	Article
Language:	eng
Subjects:	Configurations Geometry Giant magnetoimpedance Impact analysis Inductance Magnetic field sensor Magnetic fields Mechanical properties Mutual inductance Patterned amorphous ribbons Ribbons
Online Access:	Get full text
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Summary:	The effect of geometry on Giant Magnetoimpedance effect (GMI) in a meander structure composed of three amorphous magnetic ribbons ((Co0.94 Fe0.06)72,5 Si12.5 B15; 20 mm length) connected electrically in series is analyzed. The impedance behavior under the meander configuration is compared with the sum configuration, namely, the sum of the impedance of each ribbon measured individually. The geometry effect in GMI response is examined by changing the distance, D = 0.5, 1 and 2 cm, between ribbons in the meander. The highest GMI ratio is found for D = 0.5 cm, with a gradual decrease for increasing distances. The lowest ratio corresponds to the sum configuration. The analysis of the results shows that this behavior of the GMI ratio, dominated by inductance, is determined by the overall negative contribution of the mutual inductance established between ribbons, and not by any intrinsic modification of the GMI effect in the meander structure. [Display omitted] •Influence of geometry on the GMI response of meanders made with the same samples.•Smaller sample distances in meander produce lower reactance and thus, larger GMI.•Decrease of reactance is caused by the net negative effect of mutual inductance.•The enhancement of GMI ratio in a meander structure is purely a numerical effect.•There is no intrinsic improvement in GMI meanders with respect to single samples.
ISSN:	0924-4247 1873-3069