Stress reconfigurable tunable magnetoelectric resonators as magnetic sensors

Jillian Kiser (1) , Peter Finkel (1) , Junqi Gao (2) , Christophe Dolabdjian (3) , Jiefang Li (2) , D. Viehland (2)

1 Naval Undersea Warfare Center
2 MSE - Department of Materials Science and Engineering [Blacksburg]
3 Equipe Electronique - Laboratoire GREYC - UMR6072

We report a magnetoelastic effect in doubly clamped ferromagnetic magnetostrictive Metglas resonators with electrically and magnetically reconfigurable frequency response. The field-induced resonance frequency shift is due to magnetostrictive strain, which is shown to have a strong dependence on uniaxial stress. Here, we demonstrate that this magnetic field induced behavior can be used as the basis for a simple, tunable, magnetoelectric magnetic field sensor. The effect of tension on the field dependent magnetostrictive constant and the sensor sensitivity is examined, and the equivalent magnetic noise floor of such a sensor is estimated.

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

Jillian Kiser, Peter Finkel, Junqi Gao, Christophe Dolabdjian, Jiefang Li, et al.. Stress reconfigurable tunable magnetoelectric resonators as magnetic sensors. Applied Physics Letters, 2013, p1-4. ⟨hal-00995295⟩