Perspectives in Giant Magnetoimpedance Magnetometry

D. Menard (1) , D. Seddaoui (1) , L. G. C. Melo (1) , A. Yelon (1) , Basile Dufay (2) , Sébastien Saez (2) , Christophe Dolabdjian (2)

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

Approximate expressions are obtained for the sensitivity of a GMI wire. The optimal conditions for high sensitivity are discussed in terms of material and external parameters, such as dc field, dc current bias, driving current amplitude and frequency. We show that the systematic reduction of the anisotropy field is not necessarily the best approach to increasing the material sensitivity.

Mots clés: Giant Magnetoimpedance; Material Optimization; Magnetometer

Domaines: Sciences de l'ingénieur [physics]; Electromagnétisme

D. Menard, D. Seddaoui, L. G. C. Melo, A. Yelon, Basile Dufay, et al.. Perspectives in Giant Magnetoimpedance Magnetometry. Sensor letters, 2009, 7 (3, Sp. Iss. SI), pp.339-342. ⟨10.1166/sl.2009.1091⟩. ⟨hal-00987727⟩