Planar Hall effect bridge magnetic field sensors

Journal Article · Mon Jul 05 00:00:00 EDT 2010 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3460290· OSTI ID:21367005

Henriksen, A D; Dalslet, B T; Skieller, D H; Lee, K H; Okkels, F; Hansen, M F ^[1]

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1. 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

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FERROMAGNETIC MATERIALS
GEOMETRY
HALL EFFECT
MAGNETIC FIELDS
SENSORS
TOPOLOGY
TRANSDUCERS
MAGNETIC MATERIALS
MATERIALS
MATHEMATICS