Since different crystal directions are associated with different lengths this effect induces a strain in the material. The reciprocal effect, the change of the magnetic susceptibility (response to an applied field) of a material when subjected to a mechanical stress, is called the Villari effect.
https://en.wikipedia.org/wiki/Magnetostriction
The Villari reversal is the change in sign of the magnetostriction of iron from positive to negative when exposed to magnetic fields of approximately 40 kA/m. On magnetization, a magnetic material undergoes changes in volume which are small: of the order 10 −6.
https://en.wikipedia.org/wiki/Magnetostriction
The inverse magnetostrictive effect (also known as magnetoelastic effect or Villari effect ) is the name given to the change of the magnetic susceptibility of a material when subjected to a mechanical stress.
https://www.revolvy.com/topic/Villari%20effect&item_type=topic
The Villari reversal is the change in sign of the magnetostriction of iron from positive to negative when exposed to magnetic fields of approximately 40,000 A/m. On magnetization, a magnetic material undergoes changes in volume which are small: of the order 10−6.
https://en.wikipedia.org/wiki/Magnetostriction
Magnetostriction - Explanation. 1  Internally, ferromagnetic materials have a structure that is divided into domains, each of which is a region of uniform magnetic polarization.
https://en.wikipedia.org/wiki/Magnetostriction
Villari effect Save The inverse magnetostrictive effect (also known as magnetoelastic effect or Villari effect) is the name given to the change of the magnetic susceptibility of a material when subjected to a mechanical stress.
https://www.revolvy.com/topic/Villari%20effect&item_type=topic
3. On the origin of the Villari effect re H=40A/m ;3 ,20 ,0 15 40 10 6 20 40 60 80 MPa Together with a decrease in exchange energy and in magnetocrystalline anisotropy energy, which is due to the magnetostrictive effects, there occurs an increase in internal stresses al.
https://www.sciencedirect.com/science/article/pii/0304885380905703
It can be observed, for instance, as an increase or a decrease of magnetic flux density B at a given magnetic field H when an external force is applied. The appearance of an extrenum in the B(a)H relation is known as the Villari effect and the point at which / = 0, as the Villari point. The magneto-elastic properties of materials are of great technical importance, especially as concerns the possibility of application to magneto-elastic transducers.
https://www.sciencedirect.com/science/article/pii/0304885380905703
The origin of the Villari effect and its technical importance is discussed. It is shown that the position of the Villari point and piezomagnetic sensitivity depend on the same properties of a material as those governing the B(H) relation. 1.
https://www.sciencedirect.com/science/article/pii/0304885380905703
Magnetostriction (cf. electrostriction) is a property of ferromagnetic materials that causes them to change their shape or dimensions during the process of magnetization. The variation of materials' magnetization due to the applied magnetic field changes the magnetostrictive strain until reaching its saturation value, λ.
https://en.wikipedia.org/wiki/Magnetostriction
villari effect
The Villari reversal is the change in sign of the magnetostriction of iron from positive to negative when exposed to magnetic fields of approximately 40 kA/m. The Villari reversal changes the sign of the magnetostriction of iron from positive to negative when exposed to magnetic fields of approximately 40 kiloamperes per meter.