A vacancy model for the electronic structure of substitutional transition elements near to the end of the 3d, 4d and 5d series was described, and a simplified theoretical treatment was presented for their paramagnetic properties. It was concluded that the complete set of such impurities for which experimental information was available (Nis-, Pds-, Pts-, Aus0) were all described well by the model. An alternative and physically more reasonable analysis was proposed for electron paramagnetic resonance and electron-nuclear double resonance results for Nis- and Pds-.

G.D.Watkins, P.M.Williams: Physical Review B, 1995, 52[23], 16575-80