What is meant by Frenkel defect? - Material Science

Q.  What is meant by Frenkel defect?
- Published on 05 Aug 15

a. defect in which interstitial position is occupied by missing atoms
b. defect in which positive and negative ions are missing
c. defect in which interstitial position is occupied by extra atom in the crystal without disorganizing the parent atom
d. none of the above

ANSWER: defect in which interstitial position is occupied by missing atoms

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    Discussion

  • Chirag Patel   -Posted on 30 Jan 21
    In the Schottky defect, an atom moves from the inside of the crystal to its surface, leaving behind an isolated vacancy
  • Sravanthi   -Posted on 06 Oct 15
    A missing atom occupying interstitial position is called as Frenkel defect. This is a point defect and is caused due to imperfect packing of atoms during crystallization.

    Frenkel defect has no effect on density of materials and preserves both volume and mass, because here only migration of ions takes place within crystal.

    ZnS, AgCl, AgBr, etc exhibit Frenkel defect.

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