Planar Hall effect bridge magnetic field sensors
- Department of Micro- and Nanotechnology, DTU Nanotech, Technical University of Denmark, Building 345 East, DK-2800 Kongens Lyngby (Denmark)
Until now, the planar Hall effect has been studied in samples with cross-shaped Hall geometry. We demonstrate theoretically and experimentally that the planar Hall effect can be observed for an exchange-biased ferromagnetic material in a Wheatstone bridge topology and that the sensor signal can be significantly enhanced by a geometric factor. For the samples in the present study, we demonstrate an enhancement of the sensor output by a factor of about 100 compared to cross-shaped sensors. The presented construction opens a new design and application area of the planar Hall effect, which we term planar Hall effect bridge sensors.
- OSTI ID:
- 21367005
- Journal Information:
- Applied Physics Letters, Vol. 97, Issue 1; Other Information: DOI: 10.1063/1.3460290; (c) 2010 American Institute of Physics; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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