PHZ3400 Symmetry Breaking

Ferromagnet and Curie-Weiss Theory

>>Insert Brief overview of ferromagnetism here?

The relationship between magnetic susceptibility versus temperature is linked through the Curie temperature of the material. Combining equations of Curie's Law and magnetic susceptibility, the Curie-Weiss law is formed.

$\chi ={\frac {C}{T-T_{c}}}$

The denominator can become undefined, which is alarming. In nature, this represents spontaneous magnetization when T = T_c or below.

Caution must be taken near the critical point, in this case Curie Point. The mean field approximation does not accurately represent critical behavior nearby the critical point.