Re-use of this resource is governed by a Creative Commons Attribution-
Noncommercial-Share Alike 2.0 Licence UK: England & Wales
https://creativecommons.org/licenses/by-nc-sa/2.0/uk/
creative commons DoITPoMS logo

 Interstitial



This is when a smaller atom on an interstitial site diffuses through the lattice. There is still an energy barrier to overcome with this mechanism, but it is lower due to the smaller atom, and there are also lots of vacant sites for it to diffuse to.