Hybrid Magnetoelectric Sensors Based on Mechanically Soft Composite Materials
The aim of the project A2 is to design, fabricate, and characterize mechanically soft magnetostrictive and piezoelectric composite materials and hybrid magnetoelectric (ME) sensors made thereof. In this approach the magnetic field energy is transferred nearly completely to charge separation in the equally soft piezoelectric phase. Hence, the restoring forces for the magnetostrictive expansion will be mostly due to the coulomb potential arising from the charge separation. Thus, the project aims for a limit of detection (LOD) < 1 pT/Hz^1/2 at low frequencies < 30 Hz without high quality resonators which limit the bandwidth.