How do dipoles make a metal magnetic?

First of all, in a magnetic body (a ferrous metal), magnetization is defined as the density of any magnetic dipole moments.

Dipoles need to be oriented parallel to one another generally.

In summary, these factors have the ability to magnetize metals:

Magnetic domains are aligned by electric currents.

Lower than the Curie temperature

The phenomenon of Ferromagnetism

Some metals exhibit ferromagnetism, which is the phenomenon that creates permanent magnets. These metals' atoms have an unpaired electron, which causes their spin to align when a magnetic field is applied.

These are regions that contain atomic dipoles. Strong magnetic domains can induce other properties, such as iron, when these dipoles align in a single direction.

When dipoles align in a metal, they create a magnetic field due to the alignment of their magnetic moments. This alignment occurs when the metal is exposed to an external magnetic field or when the metal is cooled below its Curie temperature, causing the individual dipoles to align spontaneously. The aligned dipoles then generate a net magnetic field, making the metal magnetic.