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?

Uniform circular motion, Major steps for analyzing forces in uniform circul...

Major steps for analyzing forces in uniform circular motion: Let consider one axis along the radius of circle (i.e. in direction of acceleration) and other axis perpendicular to th

How to find out neutral point, How to find out neutral point ? What all thi...

How to find out neutral point ? What all things we require to equate or form a equation to find the neutral poind and how to do it?

Magnetic Effects of Electric Current., A spring is held vertically downward...

A spring is held vertically downward and a current is passed through it . Then the length of the spring : A . increases B. decreases C . does not change D the spring osc

Light-emitting diode, Describe the internals of a light-emitting diode (LEO...

Describe the internals of a light-emitting diode (LEO). Describe what happens internally when sufficient current is applied to activate LED.  What isthe device pictured? Wh

Classification of solid, what is classification of solid insulator , semico...

what is classification of solid insulator , semiconductor , conductor

Wave Equations, The formula y=A cos ?(t-x/v), describes a wave that moves i...

The formula y=A cos ?(t-x/v), describes a wave that moves in the +x direction along a stretched string. Show that this formula is a solution of the wave equation?

Single negatively charged particle a maximum, Where is the electric potenti...

Where is the electric potential because of a single negatively charged particle a maximum? Answer:  One could acquire at this one by looking at the formula for the electri

Determine the forbidden gap of germanium, For germanium the forbidden gap i...

For germanium the forbidden gap is (A) 0.15ev. (B) 0.25ev. (C) 0.5ev. (D) 0.7ev. Ans: For germanium the forbidden gap is 0.7ev.

Determine the velocity of ball down the hill, A child rolls a ball up a hil...

A child rolls a ball up a hill at 3.24 m/s. If the ball experiences an acceleration of 2.32 m/s 2 . How long will it take for the ball to have a velocity of 1.23 m/s down the

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