Curie constant

Curie's constant is

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,

where N is the number of magnetic moments, μ is an individual magnetic moment and k_B is Boltzmann's constant. It comes from Curie's Law, which is the relationship between magnetic susceptibility and temperature of a paramagnetic material

.

This equation was first derived by Pierre Curie (Marie Curie's husband.)

Because of the relationship between magnetic susceptibility χ, magnetization M and applied magnetic field H:

,

this shows that for a paramagnetic system of non-interacting magnetic moments, magnetization M is inversely related to temperature T (see Curie's Law).

See also

• Curie's law
• Paramagnetism