Explain the following terms with one example each: (a) Ferrimagnetism
Ferrimagnetism: Ferrimagnetic substances contain magnetic moments aligned in parallel and antiparallel orientations, in unequal quantities. Ferrites such as MgF2O4 and ZnFe2O4 are examples of this. Magnesium is attracted to ferrimagnetic materials more strongly than to ferromagnetic materials. These compounds become paramagnetic when heated.
