Magnetic domains, Physics

Assignment Help:

Ferromagnetic materials get magnetic properties not only because their atoms owns a magnetic moment but also because the material consists of small regions called as magnetic domains. A magnetic domain is a region of the crystal in which all the spin magnetic moments are applied to a magnetic moment in one direction only. This alignment generates as the material creates its crystalline structure during solidification from the molten state. During solidification a million or more atom moments are aligned parallel so that the magnetic force within the domain is strong in one direction. Ferromagnetic materials obtain saturation magnetization in each of the domains without an external magnetic field being applied. Even though the domains are magnetically saturated the bulk material can not demonstrate any signs of magnetism as the domains develop themselves are randomly oriented relative to each other. Ferromagnetic materials turn out to be magnetized when the magnetic domains inside the material are aligned. This can be done by placing the material in the strong external magnetic field or by passing electrical current through the material. Some or the entire domain can become aligned. The more the domains are aligned, the stronger the magnetic field in the material. When the entire domain is aligned, the material said to be magnetically saturated. When a material is magnetically saturated then no extra amount of external magnetization force will make an increase in its internal level of magnetization.

 


Related Discussions:- Magnetic domains

Explain electric lawn-mower, Explain electric lawn-mower A television ...

Explain electric lawn-mower A television set having a power rating of 120W and electric lawn-mower of power rating 1 kW are both linked to a 240V supply. If 3A, 5A and 10A

Briefly explain eddy current laws and hysterious laws, Eddy currents can be...

Eddy currents can be briefly explained as currents produced due to induced emf in the form of eddies or ripples. Hysteresis laws mainly consists of 2 topics retentivity and coerci

Circuits involving capacitive decay, Circuits involving capacitive decay: ...

Circuits involving capacitive decay: Consider the circuit shown below. Depending on the time constant of the circuit, relative to the period of the square wave applied to it,

Motiob, Ask question #nimum 100 words accepted# what is force?

Ask question #nimum 100 words accepted# what is force?

Existing electric field, 12 joule of work has to be completed against an ex...

12 joule of work has to be completed against an existing electric field to take a charge of 0.01 C from A and B. How much is the potential difference VB-VA.

Edwards-casimir quantum vacuum drive, Edwards-Casimir quantum vacuum drive ...

Edwards-Casimir quantum vacuum drive A hypothetical drive exploiting the peculiarities of quantum mechanics through limiting allowed wavelengths of virtual photons on one side

Determine the speed of the mass when kinetic energy is given, As a 10 kilog...

As a 10 kilogram mass on the end of a spring passes through its equilibrium position, the kinetic energy of the mass is 20 joules. The speed of the mass is: a) 2.0 meters per

Describe the magnetic moment of a bar magnet, Describe the magnetic moment ...

Describe the magnetic moment of a bar magnet. What is its direction? Can you find two magnetic field lines intersecting? Why?

Explain how tunneling takes place in forward bias, Describe how tunneling t...

Describe how tunneling takes place    When  tunnel  diode  is  forward  biased,  its  initial  behaviour  is  similar  to  that when it's reverse biased. Now, some of the fille

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