Question

How do the magnetic domains of a magnetic material align in the absence of an external magnetic field. ​

Answer 1

Answer:

In the absence of an external magnetic field, the magnetic moments of domains of ferromagnetic substance are randomly arranged, hence the net magnetic moment of a ferromagnetic substance is zero. In an external magnetic field, they get strongly magnetized in the same direction as that of the field. The domain size increases.

Answer 2

$\huge \frak \purple {Answer}$

In ferromagnetic materials, the spins of neighboring atoms do align even in the absence of an external field (through a quantum effect known as exchange coupling), resulting in small (a tenth of a millimeter, or less) neighborhoods called domains where all the moments are aligned.