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← ScienceWhich outcome results when exceeding the Curie temperature in Permalloy?
A)Sudden demagnetization of the material✓
B)Increased magnetic domain alignment
C)Decreased electrical resistance linearly
D)Enhanced magnetostriction effect occurs
💡 Explanation
Above the Curie temperature, thermal energy disrupts the magnetic order; therefore **spontaneous magnetization** disappears because thermal fluctuations overcome exchange interactions, rather than enhanced alignment, as it induces randomization.
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