Characterization of an optimized off-diagonal GMI-based magnetometer

Basile Dufay (1, 2) , Sébastien Saez (1) , Christophe Dolabdjian (1) , Arthur Yelon (2) , David Ménard (2)

1 Equipe Electronique - Laboratoire GREYC - UMR6072
2 Département de génie physique [Montréal]

An optimized giant magneto-impedance effect magnetometer has been developed, based upon an overall analysis of the measurement chain, including physical material properties, associated detection coil parameters, and equivalent magnetic noise performances. The field response model for the sensing element and the noise model yield good agreement with experimental results. The noise performance of the magnetometer, approximately 1.7pT/√Hz in the white noise region, with a band-pass of about 70kHz, is competitive with that of other technologies. Present limitations are clearly established, leaving room for further improvements.

Mots clés: Giant magneto-impedance (GMI); magnetometers; noise

Domaines: Electronique

Basile Dufay, Sébastien Saez, Christophe Dolabdjian, Arthur Yelon, David Ménard. Characterization of an optimized off-diagonal GMI-based magnetometer. IEEE Sensors Journal, 2013, 13 (1), pp.379 - 388. ⟨10.1109/JSEN.2012.2216521⟩. ⟨hal-00824131⟩