Consider the following face-centered-cubic dislocation reaction: a/2 [110] → a/6 [211] + a/6 [121] a. Prove that the reaction will occur. b. What kind of dislocations are the (a/6)<121>? c. What kind of crystal imperfection results from this dislocation reaction? d. What determines the distance of separation of the (a/6)[211] and the (a/6)[121] dislocations?

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Crystalline Imperfections

The crystalline imperfections are described as the geometrical defects in the crystal due to incorrect arrangement of atoms, impurity, vacancy, and many more. It is not possible to achieve a perfect or ideal crystal, practically.