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Open AccessArticle

Influence of Torsion on Matteucci Effect Signal Parameters in Co-Based Bistable Amorphous Wire

Warsaw University of Technology, Institute of Metrology and Biomedical Engineering, ul. Sw. A. Boboli 8, 02-525 Warsaw, Poland
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Materials 2019, 12(3), 532; https://doi.org/10.3390/ma12030532
Received: 13 December 2018 / Revised: 1 February 2019 / Accepted: 8 February 2019 / Published: 11 February 2019
(This article belongs to the Special Issue Magnetoelastic Materials)
The Matteucci effect (ME) is one of the lesser-known magnetomechanical effects and is most prominent in bistable amorphous wires. It has some experimental applications—Matteucci effect-based magnetic field sensors are very easy to produce and have inherently linear, hybrid analog/digital output signal. The effect is still poorly understood, however, and although it relies on torsion of the wire to manifest, there is no available model, or much experimental data, which would quantitatively connect the ME with the sample twist. In this paper, experimental characteristics of ME signal parameters dependence on torsion in Co-based amorphous bistable wire are presented. The results hint at possible applications, such as rotation or critical current sensors, as well as the necessity of torsion control in the development of ME magnetic field sensors. View Full-Text
Keywords: Matteucci effect; magnetoelastic effect; amorphous wire; magnetic bistable wire; Barkhausen Jump Matteucci effect; magnetoelastic effect; amorphous wire; magnetic bistable wire; Barkhausen Jump
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Charubin, T.; Nowicki, M.; Szewczyk, R. Influence of Torsion on Matteucci Effect Signal Parameters in Co-Based Bistable Amorphous Wire. Materials 2019, 12, 532.

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