Abstract
We took advantage of the large anomalous Hall effect (AHE) in Fe-Pt ferromagnetic alloys and fabricated magnetic sensors for low-frequency applications. We characterized the low-frequency electronic noise and the field detectability of the FexPt100-x system with various thin film thicknesses and Fe concentrations. The noise source consisted of 1/f and Johnson noise. A large current density increased the 1/f noise but not the Johnson noise. We found that the field detectability of the optimized Fe-Pt thin film offers much better low-frequency performance than a highly sensitive commercial semiconductor Hall sensor. Anomalous Hall effect sensors are, therefore, good candidates for magnetic sensing applications.
Original language | English (US) |
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Pages (from-to) | 3537 |
Journal | Sensors (Switzerland) |
Volume | 19 |
Issue number | 16 |
DOIs | |
State | Published - Aug 13 2019 |
Externally published | Yes |
ASJC Scopus subject areas
- Biochemistry
- Atomic and Molecular Physics, and Optics
- Analytical Chemistry
- Electrical and Electronic Engineering