Intrinsic point defects and light interstitials in metals

Magnetism of isolated cadmium atoms in vacancy-associated sites in nickel

“…A generalization to other 5sp-elements should be possible, since model calculations show similarities in the local s-wave level densities for these elements. A reanalysis of published data for the elements Sn, Sb, and Te in nickel [12][13][14][15][16][17][18] is likely to give support to the concept. At this point the discussion in this paper merges with an earlier proposition of de Waard et al who attributed the C-site configurations of Sn, Sb, and Te in nickel to agglomerates of four vacancies around these elements.…”

“…In Fig. 4, the theoret- ical results, which have originally been calculated for the n = 8 and n = 7 nickel surface sites, 31 are compared with the experimentally determined fields at vacancy-associated sites of Cd in nickel ͓this work͔, of In in nickel, 17,43 and with the values which are given for the other elements in de Waard's paper. 18 The expected fields which are estimated for other coordination numbers deviate significantly from the fields for the n = 8 and n = 7 clusters.…”

“…1 In follow-up experiments with other sp-elements, evidence was found for the existence of the same vacancyassociated configuration at Sn, [12][13][14][15][16] at In and at Te in nickel. 17,18 The Mossbauer measurements of 119 Sn in nickel also showed a manifold of sites with different numbers of vacancies being associated. Even larger vacancy complexes containing up to n = 100 vacancies around Sn in nickel were discovered by positron annihilation experiments and became visible by optical methods.…”