Which outcome occurs when ferromagnetic nanoparticles reach the Curie temperature?

A)Loss of spontaneous magnetization occurs✓

B)Increased mechanical hardness results

C)Electrical resistivity decreases linearly

D)Thermal expansion coefficient sharply increases

💡 Explanation

Above the Curie temperature, thermal energy disrupts the alignment of atomic magnetic moments; therefore it transitions to paramagnetic behavior because spontaneous magnetization is destroyed by the loss of long-range ordering rather than increased mechanical hardness.

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Which outcome occurs when ferromagnetic nanoparticles reach the Curie temperature?

💡 Explanation

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