Ferromagnetic Material

Physics

law

Curie's Law

Curie's Law : For paramagnetic materials,  where is the Curie's constant.
The Curie constant is a material-dependent property relating a material's temperature to its magnetic susceptibility.
The Curie constant, when expressed in SI units, is given by

where  is the number of magnetic atoms (or molecules) per unit volume,  is the Land g-factor, is the Bohr magneton,  is the angular momentum quantum number and  is Boltzmann's constant.

definition

Curie temperature

The temperature of transition from ferromagnetic to paramagnetism is called the Curie temperature .

definition

Ferromagnetic materials

Ferromagnetic materials have large magnetic susceptibility and are characterised by non linear relation between magnetic field () and magnetic intensity ().They show the property of hysteresis.