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← ScienceWhich outcome results when an ionic crystal exceeds yield strength?
A)Formation of mobile dislocation defects✓
B)Increase in intrinsic carrier concentration
C)Rapid propagation of electrical current
D)Shift in the Fermi energy level
💡 Explanation
Exceeding yield strength causes slip via dislocation motion because the material undergoes permanent, non-elastic deformation. The mechanism is dislocation slip rather than electrical effects, therefore dislocation defects are the result beyond yielding.
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