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(B) The Curie temperature $(T_C)$ is a characteristic property of ferromagnetic materials.Below the Curie temperature,the magnetic moments of atoms in

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$A$ ferromagnetic material becomes paramagnetic

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(B) The Curie temperature $(T_C)$ is a characteristic property of ferromagnetic materials.Below the Curie temperature,the magnetic moments of atoms in a ferromagnetic material are aligned in domains,resulting in strong spontaneous magnetization.As the temperature increases,thermal agitation disrupts this alignment.At temperatures above $T_C$,the thermal energy becomes sufficient to overcome the exchange interaction that keeps the magnetic moments aligned.Consequently,the material loses its ferromagnetic properties and transitions into a paramagnetic state,where the susceptibility follows the Curie-Weiss law.

Curie temperature is the temperature above which

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