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Which risk increases when a rapid temperature change occurs in a crystalline lattice?

A)Increased point defect concentration
B)Enhanced intrinsic carrier mobility
C)Stabilization of pre-existing dislocations
D)Suppressed thermal phonon dissipation

💡 Explanation

Increased point defect concentration results because rapid temperature changes introduce thermal stress, causing atoms to vacate lattice sites via the Frenkel defect mechanism. Therefore, more vacancies and interstitials exist, rather than stabilized dislocations which require longer-term deformation.

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