Electronic transition between two
orbitals of an
atom that is situated in a
crystal field Crystal field theory (CFT) describes the breaking of degeneracies of electron orbital states, usually ''d'' or ''f'' orbitals, due to a static electric field produced by a surrounding charge distribution (anion neighbors). This theory has been used ...
environment. For example, ''dd''-transitions on a
copper atom that is surrounded by an
octahedron of
oxygen atoms.
Crystallography
{{Crystallography-stub