Detection of Low-Frequency Magnetic Fields Down to Sub-pT Resolution With Planar-Hall Effect Sensors
| Autor: | Proloy T. Das, Moty Schultz, Shai Amrusi, Asaf Grosz, Lior Klein, Hariharan Nhalil |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
business.industry 010401 analytical chemistry Resolution (electron density) Measure (physics) Linearity 02 engineering and technology Low frequency 021001 nanoscience & nanotechnology 01 natural sciences Magnetic flux 0104 chemical sciences Magnetic field Hysteresis Optoelectronics Electrical and Electronic Engineering 0210 nano-technology business Instrumentation Frequency modulation |
| Zdroj: | IEEE Sensors Letters. 5:1-4 |
| ISSN: | 2475-1472 |
| Popis: | Using planar Hall effect sensors with magnetic flux concentrators, we measure magnetic fields at frequencies below 100 Hz. We show that for a measurement time of up to 100 s, it is possible to detect fields of ∼700 fT and ∼1 pT at 10 Hz and 0.1 Hz, respectively. In addition, we measure the linearity and hysteresis of the sensor for fields ≤2.6 μ T. These features, combined with the sensor miniature size, low power consumption, and potential low cost, may pave the way for usage in a wide range of applications. |
| Databáze: | OpenAIRE |
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