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?

A lever of the first class, A lever of the first class Saw off a stick ...

A lever of the first class Saw off a stick or board so that it is the similar height as a heavy desk or table in the classroom. Place another stick about the similar length on

Calculate mean life and half life, Q. The half life of radon is 3.8 days. C...

Q. The half life of radon is 3.8 days. Calculate mean life. Half Life Period          HLP T ½ = 0.6931 / λ = 0.6931 τ therefore                      Mean life τ = T ½ / 0.

What are non ohmic and ohmic devices, What are non ohmic and ohmic devices?...

What are non ohmic and ohmic devices? Give examples The manganin wire is used in the manufacturing of standard resistances. Why?

Maximum range, Maximum Range Suppose a cannonball launched from a canno...

Maximum Range Suppose a cannonball launched from a cannon at 3 various launch angles - 30-degrees, 45-degrees, and 60-degrees. The launch speed is held constant; just the angle

Objective to exports, Objective After studying this unit, you should be ...

Objective After studying this unit, you should be able to: 1.  explain the importance of international trade; 2.  discuss why a fm is motivated to export; 3.  identify

Writing, what is cruisiing mean

what is cruisiing mean

Vectors, practical applications of vectors in everyday life

practical applications of vectors in everyday life

Magnetism, explain origin of dimagnetsm on the basis of its atomic structur...

explain origin of dimagnetsm on the basis of its atomic structure

Stationary-orbits, According to uncertainity stationary orbits are accepted...

According to uncertainity stationary orbits are accepted or not?please give reason Ans) According to uncertainity stationary orbits are not accepted because according to station

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