Question

Frenkel defect is also known as?

Answer 1

Frenkel defect is also known as the Frenkel disorder or Frenkel pair. 
It is a type of point defect that occurs in ionic crystals, where an ion moves from its lattice site to an interstitial position, creating a vacancy at its original site. This defect was named after the Russian scientist Yakov Frenkel, who first described it in 1926.