What is magnetostriction?, Physics

Assignment Help:

 

If we have to strain a ferromagnetic crystal along certain direction, we would change the inter atomic spacing not only along this direction but also in other direction. And hence the exchange interactions between the atomic spins are also changed. This would lead to a change in the magnetization property of crystal. When an iron crystal is placed in a magnetic field along an easy direction, it gets longer along this direction but contracts in the transverse directions. The longitudinal strain $l/l along the direction of magnetization is called magnetostriction constant denoted by λ. When the crystal reaches saturation magnetization, λ also reaches saturation called saturation strain. The crystal lattice strain energy associated with magnetostriction is called magnetostrictive energy. Magnetostriction is responsible for transformer hum noise.


Related Discussions:- What is magnetostriction?

Release of energy by the process of nuclear fusion, Draw a graph showing th...

Draw a graph showing the variation of binding energy per nucleon with mass number for dissimilar nuclei. Describe, with the help of this graph, the release of energy by the process

When are intermolecular forces the strongest, When are intermolecular force...

When are intermolecular forces the strongest? Intermolecular forces (dipole-dipole, dispersion and hydrogen bonds). These forces are weaker than chemical (covalent) bonds. Thus

Determine the bending moment, Determine the Shear Force in kN rounded to 1 ...

Determine the Shear Force in kN rounded to 1 DP and Bending Moment in kN.m rounded to 1 DP at point C in the beam when the UDL on the beam is P52 kN/m (as for the previous question

Can a solid as well as liquid together be possible, Q. Can a solid as well ...

Q. Can a solid as well as liquid together be possible? Answer:- In reality substances can exist in all three states of matter simultaneously if the conditions are right. T

Analog electronics, current gam relashionship betweem alpha and betta

current gam relashionship betweem alpha and betta

Rutherford''s atomic model, RUTHERFORD'S ATOMIC MODEL:- Rutherford prop...

RUTHERFORD'S ATOMIC MODEL:- Rutherford proposed that all the positive charge and mass of the atom was concentrated in a small central region which is called the nucleus.This mo

Lawson criterion, Lawson criterion (J.D. Lawson): A situation for the ...

Lawson criterion (J.D. Lawson): A situation for the release of energy from a thermonuclear reactor. Usually it is stated as the minimum value for the product of the density of

Experiment of a simple pendulum, A simple pendulum Tie a cord at least ...

A simple pendulum Tie a cord at least 2 m long to some object like a stone or a small metal ball. Suspend this in a doorway or from a hook in the ceiling and begin it swinging

Explain local electric field, Local electric field : It is the sum of the e...

Local electric field : It is the sum of the electric field from external sources and the field of the dipoles within the specimen. It is an idealized field calculated under particu

Evaluatre the magnitude of the gravitational force, A 2400-kg satellite is ...

A 2400-kg satellite is in a circular orbit around a planet. The satellite travels with a constant speed of 6.67x10 3 m/s. What is the acceleration of the satellite? Determine the m

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd