Question

Which of the following shows ferrimagnetism?

• A. TiO$_2$
• B. CrO$_2$
• C. MnO
• D. Fe$_3$O$_4$

Hint:

Ferrimagnetism is typical of ferrites such as Fe$_3$O$_4$, where magnetic ions occupy different lattice sites and align in opposite directions, but with unequal moments.

Answer 1

The Correct Option is D

• Ferrimagnetism is a type of magnetism observed in materials like Fe$_3$O$_4$ (magnetite), where the magnetic moments of the atoms on different sublattices are opposed, but unequal, resulting in a net magnetic moment.
• TiO$_2$, CrO$_2$, and MnO do not exhibit ferrimagnetism; CrO$_2$ is ferromagnetic, while MnO is antiferromagnetic.