Optimized off-diagonal GMI-based magnetometer

Basile Dufay (1) , Sébastien Saez (1) , Christophe Dolabdjian (1) , David Ménard (2) , Arthur Yelon (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 1.7 pT/ √Hz in the white noise region, with a band-pass of about 70 kHz, is competitive with that of other technologies. Present limitations are clearly established, leavingroom for further improvements.

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

Domaines: Electronique

Basile Dufay, Sébastien Saez, Christophe Dolabdjian, David Ménard, Arthur Yelon. Optimized off-diagonal GMI-based magnetometer. Magnetic Scholl : High sensitivity magnetometers, Oct 2012, Branville, France. 2012. ⟨hal-01109723⟩