Question

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QUESTION :-
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How ferromagnetic property is explained on the basis of domain theory? Also use this theory to explain:-
1. magnetization and

2. demagnetization of substance.


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Answer 1

$\bf\huge\underline\purple{AnSweR}$

His theory is also named as domain theory of ferromagnetism. The domains are aligned along the direction of the applied magnetic field grow in size that is they align opposite to the field direction which gets reduced. ... In the presence of a strong magnetic field, the material gets magnetized by the process of alignment.

$\implies$ 1. A theory of the magnetisation process in ferromagnets, based on existing ideas of domain rotation and domain wall motion is presented. This has been developed via a consideration of the various energy terms into a mathematical description of the process leading to an equation of state for a ferromagnet.

$\implies$2. demagnetization is a process of cooling. When the salt is not magnetized, then then all its atoms are randomly oriented such that the net magnetic force is zero. If it is exposed to strong magnetic field, the atoms will align themselves to the direction of the magnetic field.

Answer 2

$\huge\red{Answer}$

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☆☞ [ Verified answer ]☜☆

• The domain theory states that inside a magnet there are small regions in which the magnetic direction of all the atoms are aligned in the same directions.

• These regions are known as domains. Within a domain, the aligment of the magnetic direction is the same.

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