Question

1.24
What the of substances would make better permanent magnets,
ferro ic or ferrimagnetic. Justify your answer.​

Answer 1

Answer:

Ferromagnetic substances would make better permanent magnets because when the ferromagnetic substance is placed in a magnetic field, all domains get oriented in the direction of magnetic field and strong a magnetic effect is produced.

Answer 2

Answer:

Ferromagnetic substances would make better permanent magnets.  

In solid state, the metal ions of ferromagnetic substances are grouped together into small regions.

These regions are called domains and each domain acts as a tiny magnet. In an unmagnetized piece of a ferromagnetic substance, the domains are randomly oriented.

As a result, the magnetic moments of the domains get cancelled.

However, when the substance is placed in a magnetic field, all the domains get oriented in the direction of the magnetic field and a strong magnetic effect is produced.  

The ordering of the domains persists even after the removal of the magnetic field.

Thus, the ferromagnetic substance becomes a permanent magnet.