Frenkel Defect
In summary, Schottky defects involve the creation of vacancies with an equal number of missing cations and anions, maintaining charge neutrality. On the other hand, Frenkel defects involve the displacement of an ion to an interstitial site, creating a vacancy at the original site, while still maintaining charge neutrality. Both types of defects can influence the electrical, optical, and mechanical properties of materials.
Frenkel Defect
Frenkel defect, also known as the Frenkel pair, is a type of point defect in crystal lattice structures. It was named after the Russian physicist Yakov Frenkel, who first proposed the concept in 1926. This defect involves the displacement of an atom from its normal lattice site to an interstitial site, creating both a vacancy at the original site and an interstitial atom elsewhere in the crystal lattice. It is commonly observed in ionic solid due to difference between size of cations and anions.
In this article, we will learn what is Frenkel Defect, its properties, causes, and effects, and how to calculate the number of Frenkel defects in a compound. We will also compare and learn difference between Frenkel and Schottky defects.
Table of Content
- What is Frenkel Defect?
- How is Frenkel Defect Formed?
- Effects of Frenkel defect
- Characteristics of Frenkel Defect
- Examples of Frenkel Defect
- Difference Between Schottky and Frenkel defects