Question

write curie law for magnetism

Answer 1

In a paramagnetic material, the magnetizationof the material is (approximately) directly proportional to an applied magnetic field. However, if the material is heated, this proportionality is reduced: for a fixed value of the field, the magnetization is (approximately) inversely proportional to temperature. This fact is encapsulated by Curie's law:


where

is the resulting magnetization is the magnetic field, measured in teslais absolute temperature, measured inkelvinsis a material-specific Curie constant.

This relation was discovered experimentally (by fitting the results to a correctly guessed model) by Pierre Curie. It only holds for high temperatures, or weak magnetic fields. As the derivations below show, the magnetization saturates in the opposite limit of low temperatures, or strong fields.

Answer 2

it states the direct dependence of magnetization of paramagnetic substance on applied magnetic field