High Sensitivity Planar Hall Effect Magnetic Field Gradiometer for Measurements in Millimeter Scale Environments
We report a specially designed magnetic field gradiometer based on a single elliptical planar Hall effect (PHE) sensor, which allows measuring magnetic field at nine different positions in a 4 mm length scale. The gradiometer detects magnetic field gradients with equivalent gradient magnetic noises...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/13/11/1898 |
| _version_ | 1827646073745702912 |
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| author | Hariharan Nhalil Moty Schultz Shai Amrusi Asaf Grosz Lior Klein |
| author_facet | Hariharan Nhalil Moty Schultz Shai Amrusi Asaf Grosz Lior Klein |
| author_sort | Hariharan Nhalil |
| collection | DOAJ |
| description | We report a specially designed magnetic field gradiometer based on a single elliptical planar Hall effect (PHE) sensor, which allows measuring magnetic field at nine different positions in a 4 mm length scale. The gradiometer detects magnetic field gradients with equivalent gradient magnetic noises of ∼958, ∼192, ∼51, and ∼26 nT/m√ Hz (pT/mm√Hz) at 0.1, 1, 10, and 50 Hz, respectively. The performance of the gradiometer is tested in ambient conditions by measuring the field gradient induced by electric currents driven in a long straight wire. This gradiometer is expected to be highly useful for the measurement of magnetic field gradients in confined areas for its small footprint, low noise, scalability, simple design, and low costs. |
| first_indexed | 2024-03-09T18:49:58Z |
| format | Article |
| id | doaj.art-72f9e2246ed7455a92a77af1c4a3729a |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-09T18:49:58Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-72f9e2246ed7455a92a77af1c4a3729a2023-11-24T05:54:53ZengMDPI AGMicromachines2072-666X2022-11-011311189810.3390/mi13111898High Sensitivity Planar Hall Effect Magnetic Field Gradiometer for Measurements in Millimeter Scale EnvironmentsHariharan Nhalil0Moty Schultz1Shai Amrusi2Asaf Grosz3Lior Klein4Department of Physics, Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, IsraelDepartment of Physics, Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, IsraelDepartment of Electrical and Computer Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, IsraelDepartment of Electrical and Computer Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, IsraelDepartment of Physics, Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, IsraelWe report a specially designed magnetic field gradiometer based on a single elliptical planar Hall effect (PHE) sensor, which allows measuring magnetic field at nine different positions in a 4 mm length scale. The gradiometer detects magnetic field gradients with equivalent gradient magnetic noises of ∼958, ∼192, ∼51, and ∼26 nT/m√ Hz (pT/mm√Hz) at 0.1, 1, 10, and 50 Hz, respectively. The performance of the gradiometer is tested in ambient conditions by measuring the field gradient induced by electric currents driven in a long straight wire. This gradiometer is expected to be highly useful for the measurement of magnetic field gradients in confined areas for its small footprint, low noise, scalability, simple design, and low costs.https://www.mdpi.com/2072-666X/13/11/1898planar hall effectgradiometermagnetic sensor |
| spellingShingle | Hariharan Nhalil Moty Schultz Shai Amrusi Asaf Grosz Lior Klein High Sensitivity Planar Hall Effect Magnetic Field Gradiometer for Measurements in Millimeter Scale Environments Micromachines planar hall effect gradiometer magnetic sensor |
| title | High Sensitivity Planar Hall Effect Magnetic Field Gradiometer for Measurements in Millimeter Scale Environments |
| title_full | High Sensitivity Planar Hall Effect Magnetic Field Gradiometer for Measurements in Millimeter Scale Environments |
| title_fullStr | High Sensitivity Planar Hall Effect Magnetic Field Gradiometer for Measurements in Millimeter Scale Environments |
| title_full_unstemmed | High Sensitivity Planar Hall Effect Magnetic Field Gradiometer for Measurements in Millimeter Scale Environments |
| title_short | High Sensitivity Planar Hall Effect Magnetic Field Gradiometer for Measurements in Millimeter Scale Environments |
| title_sort | high sensitivity planar hall effect magnetic field gradiometer for measurements in millimeter scale environments |
| topic | planar hall effect gradiometer magnetic sensor |
| url | https://www.mdpi.com/2072-666X/13/11/1898 |
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