Question

What is the difference between ferromagnetic and ferrimagnetic substances?

Answer 1

	Ferromagnetic substances	Ferrimagnetic substances
1.	These substances are strongly attracted by magnetic fields and show permanent magnetism even in the absence of a magnetic field.	The substances which possess only small net magnetic moments in spite of the presence of a large number of unpaired electrons are called ferrimagnetic substances.
2.	Ferromagnetism is due to the spontaneous alignment of magnetic moments (due to the presence of unpaired electrons) in the same direction.	In a ferrimagnetic substance, the moments are aligned in parallel and antiparallel directions in unequal numbers, resulting in a small net magnetic moment.
3.	Magnetic strength is very strong magnetism.	Magnetic strength is moderate magnetism.
4.	Domain structures are aligned uniformly.	Domain structures are oppositely aligned but unequal.
5.	For example, Iron, cobalt, nickel, CrO2, etc.	For example, Fe3O4, ferrites, etc.