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?

Secondary electron image and back scattered electron image, Q. Illustrate w...

Q. Illustrate what is dissimilar between secondary electron image and back scattered electron image? Answer:- Secondary electron images demonstrate topography of a sample.

Experiment of cutting a glass dish from a used electric bulb, Cutting a gla...

Cutting a glass dish from a used electric bulb The hemispherical bottom of an electric light bulb gives a useful glass dish; a soldering iron can be used to cut it off. put the

What is the magnifying power of the microscope, Q. A compound microscope co...

Q. A compound microscope consists of an objective lens of focal length 2.0cm and an eye piece of focal length 6.25cm separated by a distance of 15cm.How far from the objective sho

Explain the adding waves, Explain the Adding Waves? When two waves come...

Explain the Adding Waves? When two waves come from the same light source, the light waves are coherent, meaning that the phase difference between the waves is constant in time.

Visual photometry and solid angle, VISUAL PHOTOMETRY: The branch of scien...

VISUAL PHOTOMETRY: The branch of science which deals with measurement of brightness or luminous intensities of light emitted by different sources using certain standards and tech

Searles vibration magnetometre, how to find ratio of magnetic dipole moment...

how to find ratio of magnetic dipole moment of bar magnet

Evaluate with the magnitude of the force exerted on particle, Questions: ...

Questions: Regard as two charged particles at a separation of 4 cm. Particle #1 has a charge of +2 micro-coulombs. Particle #2 has a charge of +16 micro-coulombs. How does the

HOME WORK, A HEAVY STORM LEAVES 1CM OF RAIN ON 2HOUR PERIOD. HOW MANY CENTI...

A HEAVY STORM LEAVES 1CM OF RAIN ON 2HOUR PERIOD. HOW MANY CENTIMETRE CUBIC OF WATER FELL ON THE CITY

Newtons law of motion, a dock worker loading crates on a ship finds that a ...

a dock worker loading crates on a ship finds that a 24kg crate, intially at rest requires a 65N horizontal force to set it in motion.However,after the crate is in motion, a horizon

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