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← ScienceWhich outcome occurs when temperature exceeds a ferroelectric crystal's Curie point?
A)Spontaneous polarisation disappears✓
B)Band gap widens significantly
C)Resistivity decreases sharply
D)Crystal lattice becomes amorphous
💡 Explanation
Spontaneous polarization disappears because thermal energy disrupts the alignment of electric dipoles–this is Depolarization. Therefore, the crystal transitions to a paraelectric state rather than changing semiconductor properties or structure below the melting point because these involve distinct mechanisms and conditions.
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