Question

State and explain Curie's law.

Answer 1

Curie's Law:
In a paramagnetic material the magnetization of the material is directly proportional to an applied magnetic field. However, if the material is heated, the magnetization is inversely proportional to temperature.

i.e. M = C x ( B / T )

where,

M is the magnetisation

B is the magnetic field, measured in teslas

T is absolute temperature, measured in kelvins

C is a material-specific Curie constant

It was first discovered experimentally by French physicist, Pierre Curie. It holds for high temperatures, or weak magnetic fields.