The Impact of Bending Stress on the Performance of Giant Magneto-Impedance (GMI) Magnetic Sensors
The flexibility of amorphous Giant Magneto-Impedance (GMI) micro wires makes them easy to use in several magnetic field sensing applications, such as electrical current sensing, where they need to be deformed in order to be aligned with the measured field. The present paper deals with the bending im...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-03-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/17/3/640 |
| _version_ | 1818035095099932672 |
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| author | Julie Nabias Aktham Asfour Jean-Paul Yonnet |
| author_facet | Julie Nabias Aktham Asfour Jean-Paul Yonnet |
| author_sort | Julie Nabias |
| collection | DOAJ |
| description | The flexibility of amorphous Giant Magneto-Impedance (GMI) micro wires makes them easy to use in several magnetic field sensing applications, such as electrical current sensing, where they need to be deformed in order to be aligned with the measured field. The present paper deals with the bending impact, as a parameter of influence of the sensor, on the GMI effect in 100 µm Co-rich amorphous wires. Changes in the values of key parameters associated with the GMI effect have been investigated under bending stress. These parameters included the GMI ratio, the intrinsic sensitivity, and the offset at a given bias field. The experimental results have shown that bending the wire resulted in a reduction of GMI ratio and sensitivity. The bending also induced a net change in the offset for the considered bending curvature and the set of used excitation parameters (1 MHz, 1 mA). Furthermore, the field of the maximum impedance, which is generally related to the anisotropy field of the wire, was increased. The reversibility and the repeatability of the bending effect were also evaluated by applying repetitive bending stresses. The observations have actually shown that the behavior of the wire under the bending stress was roughly reversible and repetitive. |
| first_indexed | 2024-12-10T06:49:36Z |
| format | Article |
| id | doaj.art-0567bc04f6f84f09bb338a128e27761d |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-12-10T06:49:36Z |
| publishDate | 2017-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-0567bc04f6f84f09bb338a128e27761d2022-12-22T01:58:34ZengMDPI AGSensors1424-82202017-03-0117364010.3390/s17030640s17030640The Impact of Bending Stress on the Performance of Giant Magneto-Impedance (GMI) Magnetic SensorsJulie Nabias0Aktham Asfour1Jean-Paul Yonnet2Université Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Université Grenoble Alpes), G2Elab, F-38000 Grenoble, FranceUniversité Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Université Grenoble Alpes), G2Elab, F-38000 Grenoble, FranceUniversité Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Université Grenoble Alpes), G2Elab, F-38000 Grenoble, FranceThe flexibility of amorphous Giant Magneto-Impedance (GMI) micro wires makes them easy to use in several magnetic field sensing applications, such as electrical current sensing, where they need to be deformed in order to be aligned with the measured field. The present paper deals with the bending impact, as a parameter of influence of the sensor, on the GMI effect in 100 µm Co-rich amorphous wires. Changes in the values of key parameters associated with the GMI effect have been investigated under bending stress. These parameters included the GMI ratio, the intrinsic sensitivity, and the offset at a given bias field. The experimental results have shown that bending the wire resulted in a reduction of GMI ratio and sensitivity. The bending also induced a net change in the offset for the considered bending curvature and the set of used excitation parameters (1 MHz, 1 mA). Furthermore, the field of the maximum impedance, which is generally related to the anisotropy field of the wire, was increased. The reversibility and the repeatability of the bending effect were also evaluated by applying repetitive bending stresses. The observations have actually shown that the behavior of the wire under the bending stress was roughly reversible and repetitive.http://www.mdpi.com/1424-8220/17/3/640Giant Magneto-Impedance (GMI)amorphous wirebending stressflexible |
| spellingShingle | Julie Nabias Aktham Asfour Jean-Paul Yonnet The Impact of Bending Stress on the Performance of Giant Magneto-Impedance (GMI) Magnetic Sensors Sensors Giant Magneto-Impedance (GMI) amorphous wire bending stress flexible |
| title | The Impact of Bending Stress on the Performance of Giant Magneto-Impedance (GMI) Magnetic Sensors |
| title_full | The Impact of Bending Stress on the Performance of Giant Magneto-Impedance (GMI) Magnetic Sensors |
| title_fullStr | The Impact of Bending Stress on the Performance of Giant Magneto-Impedance (GMI) Magnetic Sensors |
| title_full_unstemmed | The Impact of Bending Stress on the Performance of Giant Magneto-Impedance (GMI) Magnetic Sensors |
| title_short | The Impact of Bending Stress on the Performance of Giant Magneto-Impedance (GMI) Magnetic Sensors |
| title_sort | impact of bending stress on the performance of giant magneto impedance gmi magnetic sensors |
| topic | Giant Magneto-Impedance (GMI) amorphous wire bending stress flexible |
| url | http://www.mdpi.com/1424-8220/17/3/640 |
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