Electric field sensing: What is brought by duality from flux gates?

Didier Robbes (1) , Corentin Jorel (1) , E. Olivier (2) , Laurence Méchin (1) , Sylvain Lebargy (1) , Rachid Bouregba (3) , Gilles Poullain (3) , C. Cibert (3)

1 Equipe Electronique - Laboratoire GREYC - UMR6072
2 GREYC - Groupe de Recherche en Informatique, Image et Instrumentation de Caen
3 CRISMAT - Laboratoire de cristallographie et sciences des matériaux

Ways to sense electric field using PZT capacitors are investigated. Duality rules a priori apply to material physics, linking polarization to magnetization properties, i.e. D(E) to B(H) curves, but no real electrical flux gate or charge gate does exist which would be the dual of the common flux gate magnetometer. The Landau - Khalatnikov equations are applied to ferroelectric materials subjected to both a DC and an AC pumping signal. They are solved to get the model of the PZT capacitors dynamics. They are experimentally investigated using the Sawyer Tower method. A second harmonic detection is a way to extract the DC excitation.

Mots clés: Coils; Dual models; Electric sensing devices; Ferroelectric capacitors; Ferroelectric materials; Fluxgate magnetometers; Lead compounds; Magnetic sensors; Magnetisation; Capacitors; Magnetic field measurement; Iron; Logic gates; Magnetometers; Mathematical model

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Electronique

Didier Robbes, Corentin Jorel, E. Olivier, Laurence Méchin, Sylvain Lebargy, et al.. Electric field sensing: What is brought by duality from flux gates?. SENSORS, 2013 IEEE, 2013, pp.1-4. ⟨10.1109/ICSENS.2013.6688412⟩. ⟨hal-01064152⟩