What type of substance would make better permanent magnet ferromagnetic or ferromagnetic? Justify your ans.
Answers
Answer:
Ferromagnetic substances would make better permanent magnets. A few substances like iron, cobalt, nickel, gadolinium and CrO2 are attracted very strongly by a magnetic field. Such substances are called ferromagnetic substances. Besides strong attractions, these substances can be permanently magnetized.
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.