Magnetostrictive sensors

Amorphous wires and ribbons of cobalt and iron rich alloys are being used for their suitability for use as magnetic field and strain sensors. Figure 6.1shows a magnetostrictive force sensor based on Villari effect i.e. application of external applied force generates voltage in pick up coil giving a measure of applied force.

Figure 6.1: Magnetostrictive force sensor based on Villari’s effect [Calkins, 2007]