What happens to piezoelectric properties when exposed to high temperature?

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Multiple Choice

What happens to piezoelectric properties when exposed to high temperature?

Explanation:
High temperature disrupts the ordered ferroelectric state that enables piezoelectricity. Piezoelectricity relies on aligned dipoles in a non-centrosymmetric crystal, which come from a ferroelectric phase. When the temperature rises to or above the Curie temperature, this ferroelectric order collapses and the material loses its piezoelectric response. Even below that threshold, prolonged heating can cause partial depolarization and microstructural changes that weaken the piezoelectric coefficients. In practical terms, high heat typically destroys or greatly degrades piezoelectric properties, which is why the answer is that they are destroyed.

High temperature disrupts the ordered ferroelectric state that enables piezoelectricity. Piezoelectricity relies on aligned dipoles in a non-centrosymmetric crystal, which come from a ferroelectric phase. When the temperature rises to or above the Curie temperature, this ferroelectric order collapses and the material loses its piezoelectric response. Even below that threshold, prolonged heating can cause partial depolarization and microstructural changes that weaken the piezoelectric coefficients. In practical terms, high heat typically destroys or greatly degrades piezoelectric properties, which is why the answer is that they are destroyed.

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