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Which effect occurs when exceeding a ferromagnetic core's Curie temperature?

A)Loss of spontaneous magnetization.
B)Increased hysteresis loop area.
C)Increased domain wall mobility.
D)Enhanced magnetostrictive behavior.

💡 Explanation

Loss of magnetization occurs upon exceeding the Curie temperature because thermal energy disrupts the alignment of magnetic moments, diminishing the net magnetic field via the paramagnetic transition, therefore resulting in loss of ferromagnetism, rather than enhancement of magnetic properties.

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