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State Curie - Weiss law for a ferromagne...

State Curie - Weiss law for a ferromagnetic substance.

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Magetic susceptibility of a ferromagnetic substance is inversely proportional to the absolute temperature above the critical temperature expressed in absolute scale of temperature.
Note : `T_(C)` (K) for cobalt iron nickel and gadolinium are 1394 K, 1043 K , 631 K, and 317 K respectively.
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