Curie temperature is the temperature above which (a) a ferromagnetic material becomes paramagnetic (b) a paramagnetic material becomes diamagnetic (c) a ferromagnetic material becomes diamagnetic (d) a paramagnetic material becomes ferromagnetic

Answer: (a). Above the Curie temperature, thermal agitation destroys the domain structure of a ferromagnet. It then behaves as a paramagnet with χ = (C)/(T - TC). So the answer is (a): a ferromagnetic material becomes paramagnetic.

Curie temperature is the temperature above which | JEE Main 2004 (AIEEE)

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Magnetic Materials & Curie Law

Curie temperature is the temperature above which

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Answer: (a)

Above the Curie temperature, thermal agitation destroys the domain structure of a ferromagnet.
It then behaves as a paramagnet with $\chi = \dfrac{C}{T - T_C}$ .
So the answer is (a): a ferromagnetic material becomes paramagnetic.

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