Piezoelectric–magnetostrictive magnetic sensor using stripe actuators

Abstract In this paper, we present a hybrid piezoelectric–magnetostrictive two-axis magnetometer in which the strains induced by the piezoelectric element in the magnetostrictive one produces a macroscopic bending of the sensor. With such a vibration, perpendicular anisotropy constants of the order of 780 N/m 2 are induced in the magnetostrictive element, whose experimental strains of 1.04×10 −4 measured were with pick-up coils. This sensor constitutes a simple, economic and compact magnetometer in the range of μT.