how is susceptibility depends on temparature

Whenever a magnetic material is placed inside a magnetic field it gets magnetised. Magnetic susceptibility indicates the degree of magnetisation of that material in response to the applied magnetic field.Being  a function of temperature, it is inversely proportional. If temperature increases, the susceptibility(ϰ_m) reduces.
i.e, 
ϰ_m  = $\frac{C}{T}$

Where, C is a constant of proportionality called curie constant.