Mechanical sensors based on re-entrant flux reversal

In this paper we report results of new mechanical sensors, which are based on the domain wall nucleation process. These sensors can detect position and force. It is shown that the position sensor has a linear characteristic with a submicron sensitivity and the force sensor has an almost linear behaviour for measuring force up to 3 N. Low mobility and easy shape of domain walls, allows us to use low cost of electronics, for high sensor sensitivity and linearity.