Ferrimagnetic substance show better magnetism than antiferromagneric substance. Why?
Answers
The key difference between ferromagnetism and antiferromagnetism is that ferromagnetism can be found in materials having their magnetic domains aligned into the same direction whereas antiferromagnetism can be found in materials having their magnetic domains aligned in opposite directions.
A magnetic domain or an atomic moment is a region in which the magnetic fields of atoms are grouped together and aligned. Ferromagnetic materials are attracted to an external magnetic field and have a net magnetic moment. But antiferromagnetic materials have a zero net magnetic moment
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Ferrimagnetic substances have magnetic moments of the domains aligned in parallel and anti-parallel directions in unequal numbers whereas antiferromagnetic substances domains oppositely oriented and cancel out each other's magnetic moment.
Therefore, ferromagnetic substances show better magnetism than antiferromagnetic substances.