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

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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 atomic magnetic moments in a ferromagnetic material are aligned in domains,resulting in strong spontaneous magnetization.As the temperature increases,thermal agitation disrupts this alignment.At the Curie temperature,the thermal energy becomes sufficient to overcome the exchange interaction that keeps the magnetic moments aligned.Above the Curie temperature,the material loses its ferromagnetic property and behaves as a paramagnetic material,where the magnetic susceptibility follows the Curie-Weiss law.

Curie temperature is the temperature above which

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