Which of the following statements is correct for ferromagnetic material?

These become diamagnetic at Curie temperature

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These become paramagnetic at Curie temperature

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Remain ferromagnetic

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None of these

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Solution

The correct option is B These become paramagnetic at Curie temperature
When ferromagnetic materials are heated to or above the Curie temperature, the entire domain structure collapses, and they become paramagnetic in nature.

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