The Curie-Weiss law is an important law in electromagnetism that states that magnetic susceptibility in the paramagnetic region is greater than the Curie temperature point of a ferromagnet.
A magnet's magnetic moment is a quantity that determines its torque in an external magnetic field.
A magnetic moment can be found in a bar magnet, an electric current loop, a molecule, and an electron, for example.
Curie temperature:
In nature, it is the temperature at which a ferromagnetic material becomes paramagnetic.
That is the temperature at which a magnetic material loses its magnetic property completely.