Inverse magnetostriction

Table 28.1 A number of mechanical properties as stimulus also called measurands, device types for mechanical sensors and some mechanisms often employed for the measurand in question. Piezoresistance is discussed further in the text. Magnetostriction is deformation induced by field, and inverse magnetostrictive effect is when magnetic properties are modified by the application of stress, resonant sensors have a vibrating solid that is sensitive for a given measurand... 

Impacted force (static and inertial) Load cells, elastic elements, force gauge, balances, strain gauge, bending elements Hooke s law, transforming force to displacement by an elastic element, piezoresistive effect, capacitive effect, direct or inverse magnetostrictive and magnetoelastic effects... 

Hall effect, induction, resistance change strain gauge, inverse magnetostrictive effect to detect torque through the magnetization change induced by a torsional stress, resonant effect... 

Fig. 53. Magnetostriction as a function of the inverse Fe-layer thickness for Gd/Fe multilayers. After Szymczak...

The forced magnetostriction coefficient should be large since this is inversely proportional to the relative magnetization. 

Here the coefficients 7e, 7s = 7a, and 7m correspond to the small-signal capacitance C, the effective piezoelectric charge constant dp and the inverse of the small-signal stiffness cp for a piezoelectric transducer and to the small-signal inductance L, the effective magnetostrictive constant du and the inverse of the small-signal stiffness cm for a magnetostrictive transducer, respectively. 

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