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Which 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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