Using spin-polarized density-functional theory, the formation energies of monovacancies as well as divacancies were calculated. It was shown that the unrelaxed values were quite independent of the magnetic configuration, while atomic relaxation led to smaller values; the relaxation effects being larger for the disordered magnetic structure.

Vacancy Formation in δ-Plutonium - a Density-Functional Study in the Generalized Gradient Approximation. G.Robert, A.Pasturel, B.Siberchicot: Europhysics Letters, 2005, 71[3], 412-7