Question

In a ferromagnetic material below the Curie temperature, a domain is defined as:

• A. A macroscopic region with consecutive magnetic dipoles oriented in opposite directions.
• B. A macroscopic region with zero magnetization.
• C. A macroscopic region with saturation magnetization.
• D. A macroscopic region with randomly oriented magnetic dipoles.

Answer 1

The correct option is C

A macroscopic region with saturation magnetization.

The explanation for the correct answer:

Option (C); A macroscopic region with saturation magnetization.

1. At the atomic level, ferromagnetic materials exhibit a spontaneous net magnetization even in the absence of an external magnetic field.
2. Below the Curie temperature, the ferromagnetic material domain is defined as a macroscopic region with saturation magnetization.
3. Where, the magnetic saturation just says that beyond this point even after increasing the magnetic field/ force (F), the magnetic intensity (B) of the substance cannot be increased/decreased any further.

Hence, option C is the correct option.