Curie’s law : The magnetization of a paramagnetic material is directly proportional to the external magnetic field and inversely proportional to the absolute temperature of the material.
If a paramagnetic material at an absolute temperature T is placed in an external magnetic field of induction , the magnitude of its magnetization
where the proportionality constant C is called the Curie constant.
[Notes : (1) The above law, discovered experimentally in 1895 by Pierre Curie (1859-1906) French physcist, is true only for values of Bext/ T below about 0.5 tesla per kelvin.
(2) [C] = [Mz ∙ T] / [Bext ] = [L-1 I ∙\(\odot\) ] /[MT-2 I-1]
= [M-1L-1 T2 I2 \(\odot\) ],
where \(\odot\) denotes the dimension of temperature.]
