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← ScienceWhich outcome occurs when compressive stress exceeds a crystal's limit?
A)Dislocation glide causes plastic deformation✓
B)Piezoelectric effect generates voltage
C)Vacancy diffusion increases conductivity
D)Increased electron-phonon scattering reduces mobility
💡 Explanation
Plastic deformation occurs because dislocation glide is initiated when stress surpasses a crystal's shear strength; therefore, the crystal permanently deforms, rather than simply exhibiting piezoelectricity, which would require a non-centrosymmetric structure with lower stress levels.
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