Curvature and Stress Effects on the Performance of Contour-Mode Resonant ΔE Effect Magnetometers.

ABSTRACT: Miniaturized piezoelectric/magnetostrictive contour-mode resonators have been shown to be effective magnetometers by exploiting the ΔE effect. With dimensions of ~100-200 μm across and <1 μm thick, they offer high spatial resolution, portability, low power consumption, and low cost. However, a thorough understanding of the magnetic material behavior in these devices has been lacking, hindering performance optimization. This manuscript reports on the strong, nonlinear correlation observed between the frequency response of these sensors and the stress-induced curvature of the resonator plate. The resonance frequency shift caused by DC magnetic fields drops off rapidly with increasing curvature: about two orders of magnitude separate the highest and lowest frequency shift in otherwise identic

SUBMITTER: Matyushov AD 

PROVIDER: S-EPMC9090164 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature