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?

Mobility, I need 4 numerical question about mobility

I need 4 numerical question about mobility

Determine the inside plate temperature, A carbon steel plate (thermal condu...

A carbon steel plate (thermal conductivity = 45 W/m o C) (600 x 900 x 25) mm 2 is maintained at 310 o C. Air at 15 o C bellows over the hot plate. If convection heat transfer co-e

Name the device used for data transmission, Name the device used for data t...

Name the device used for data transmission from single computer to an other Justify the name. Using this device draw the block diagram for data Communication and define it brief

Calculate the required to melt of potassium metal, Calculate the heat requi...

Calculate the heat required to melt 316.7kg of potassium metal at 336 K.   The enthalpy of fusion of potassium is 2.35 kJ mol -1 .

Polygon of force, Polygon of force This topic just builds on the previo...

Polygon of force This topic just builds on the previous Triangle of Forces. Consider three forces A, B and C.  A and B can be added by drawing a triangle to give a re

Other magnetic materials: pure iron, The term pure iron is meant a ferrous ...

The term pure iron is meant a ferrous material with an extra low carbon content for example low carbon steel and electrolytic iron. In low carbon steel carbon content is less than

Describe critical angle, With a neat and clean diagram illustrate in brief ...

With a neat and clean diagram illustrate in brief the TIR. Describe critical angle and mention the two conditions for TIR.

Explain magnetic bearing, Explain magnetic bearing The horizontal angle...

Explain magnetic bearing The horizontal angle among the line and magnetic meridian passing through one of the extremities of the line is known as magnetic bearing.

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