Investigate the Optimal Geometry to Minimize the Demagnetizing Effect in RTD-Fluxgate

The aim of this paper is to present experimental results on RTD-Fluxgate prototypes adopting different ferromagnetic materials and geometry. The residence times difference approach (RTD) exploits the effect of an external magnetic field on the time interval the system spend in the stable states of the hysteresis loop. Experiments and studies reported in the following paper, integrate the study of a previous paper where we aimed to give guidelines for the optimal system design in terms of sensitivity, and power budget; here we point on the noise behaviour optimization through the reduction of the demagnetizing effect. Moreover, examples of the application of these guidelines in the design of multilayer based RTD Fluxgate will be given