A Frenkel defect is a type of point defect in a crystalline solid, where an atom or ion is displaced from its normal lattice site to an interstitial position, creating a vacancy at its original site. This results in a pair of defects: one vacancy (where the atom was originally located) and one interstitial (the atom that has moved to an irregular position in the crystal). Frenkel defects are commonly observed in ionic solids.
New to topics? Read the docs here!