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← ScienceWhich risk increases when exceeding the Curie temperature in magnetic recording heads?
A)Increased coercivity field saturation
B)Spontaneous demagnetization of domains✓
C)Enhanced data write resolution
D)Giant magnetoresistance reduction emerges
💡 Explanation
Exceeding the Curie temperature leads to spontaneous demagnetization of domains because thermal energy surpasses magnetic ordering energy, driving a phase transition via the Curie-Weiss law. Therefore, data integrity degrades, rather than improves, with higher energy reducing the ferromagnetic capability.
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