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Which outcome occurs when exceeding displacement threshold in ferroelectric crystal?

A)Reversible piezoelectric energy harvesting occurs
B)Crystallographic domain wall motion begins
C)Pyroelectric coefficient increases substantially
D)Dielectric breakdown strength increases greatly

💡 Explanation

Applied stress surpassing the threshold strain induces crystallographic domain wall motion, because the **crystalline structure changes** therefore polarization switches alignment occur, rather than reversible energy harvesting at lower strains.

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