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← ScienceWhich outcome results when rapidly compressing a piezoelectric crystal lattice?
A)Charge displacement within individual unit cells✓
B)Increased material hardness upon compression
C)Decrease in crystal lattice energy
D)Elevation of optical refractive index
💡 Explanation
Compressing the piezoelectric crystal causes charge displacement because of the direct piezoelectric effect. This mechanical stress deforms the lattice, altering the dipole moments within the unit cells, thus generating a voltage; therefore, localized charge separation occurs, rather than other bulk property changes typically.
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