Saturation magnetization near Tc shows that in the mean field

Saturation magnetization near Tc shows that in the mean field approximation the saturation magnetization just below the Curie temperature has the dominant temperature dependence (Tc – T)1/2. Assume the spin is ½.  The result is the same as those for a second-order transition in a Ferro electric crystal the experimental data for Ferro magnets (Table 1) suggest that the exponent is closer to 0.33.

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