An electronic transition from a @LT06788@ state to a @LT07067@, or vice versa. Example: With an increase in temperature Co³⁺ ions in LaCoO₃ transform from a @LT07067@ (\(\text{t}_{\text{2g}}^{6}\text{e}_{\text{g}}^{0}\)) to the @LT06788@ state (\(\text{t}_{\text{2g}}^{4}\text{e}_{\text{g}}^{2}\)).