Planar Hall Effect Magnetometer with 5 pT Resolution

Hariharan Nhalil, Tzahi Givon, Proloy Taran Das, Nir Hasidim, Vladislav Mor, Moty Schultz, Shai Amrusi, Lior Klein, Asaf Grosz

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


We integrate elliptical planar Hall effect (PHE) magnetometers with optimized high permeability magnetic flux concentrators. The integrated magnetometers exhibit at room temperature an equivalent magnetic noise of ∼5 pT/√Hz at 10 Hz, 7.4 pT/√Hz at 1 Hz, and better than 100 pT/√Hz at 10 mHz. The results constitute more than an order of magnitude improvement over previously reported state-of-the-art PHE magnetometers, and demonstrate, for the first time, the ability of a magnetoresistive sensor to match the performance of state-of-the-art, high-end flux-gate, and miniature atomic magnetometers.

Original languageEnglish
Article number8871164
JournalIEEE Sensors Letters
Issue number12
StatePublished - Dec 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017 IEEE.


  • Magnetic sensors
  • equivalent magnetic noise (EMN)
  • magnetometer
  • planar Hall effect (PHE)


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