Question

Explain the following terms with suitable example :ferromagnetism and ferrimagnetism

Answer 1

Explanation:

(i) Ferromagnetism : Those substances which remain magnetised even after magnetic field is removed are called ferromagnetic substances. They have unpaired electrons, e.g., iron, cobolt, nickel, , e.t.c. These substances are strongly attracted by magnetic field. The phenomenon is called ferromagnetism.

iii) Ferrimagnetism

Unequal magnitude of magnetic moment associated with unpaired electrons are aligned in the same directions, the net magnetic moment is not zero.

Example: Ferrite Fe

2

O

3