Lattice locations and properties of Fe in Co/Fe co-implanted ZnO (Articolo in rivista)

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  • Lattice locations and properties of Fe in Co/Fe co-implanted ZnO (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Alternative label
  • H. P. Gunnlaugsson1, K. Johnston2, T. E. Mølholt3, G. Weyer1, R. Mantovan4, H. Masenda5, D. Naidoo5, S. Ólafsson3, K. Bharuth-Ram6,7, H. P. Gíslason3, G. Langouche8, M. B. Madsen9 and the ISOLDE Collaboration2 (2012)
    Lattice locations and properties of Fe in Co/Fe co-implanted ZnO
    in Applied physics letters; AIP Publishing LLC, Melville, NY 11747 (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • H. P. Gunnlaugsson1, K. Johnston2, T. E. Mølholt3, G. Weyer1, R. Mantovan4, H. Masenda5, D. Naidoo5, S. Ólafsson3, K. Bharuth-Ram6,7, H. P. Gíslason3, G. Langouche8, M. B. Madsen9 and the ISOLDE Collaboration2 (literal)
Pagina inizio
  • 042109 (literal)
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  • http://scitation.aip.org/content/aip/journal/apl/100/4/10.1063/1.3679692 (literal)
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  • 100 (literal)
Rivista
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  • 1 Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark 2 Physics Department, ISOLDE/CERN, 1211 Geneva 23, Switzerland 3 Science Institute, University of Iceland, Dunhaga 3, IS-107 Reykjavík, Iceland 4 Laboratorio MDM, IMM-CNR, Via Olivetti 2, 20864 Agrate Brianza (MB), Italy 5 School of Physics, University of the Witwatersrand, WITS 2050, South Africa 6 School of Physics, University of KwaZulu-Natal, Durban 4001, South Africa 7 iThemba LABS, P.O. Box 722, Somerset West 7129, South Africa 8 Instituut voor Kern-en Stralings fysika, University of Leuven, B-3001 Leuven, Belgium 9 Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark (literal)
Titolo
  • Lattice locations and properties of Fe in Co/Fe co-implanted ZnO (literal)
Abstract
  • The lattice locations and electronic configurations of Fe in 57Co/57Fe implantedZnO (to (5-6) × 1014 Fe/cm-2) have been studied by 57Fe Mössbauer emission spectroscopy. The spectra acquired upon room temperatureimplantation show ~20% of the probe atoms as Fe2+ on perturbed Zn sites and the remaining fraction as Fe2+ in damage sites of interstitial character. After annealing at 773 K, ~20% remain on crystalline sites, while the damage fraction has partly disappeared and instead a ~30% fraction occurs as high-spin Fe3+, presumably in precipitates. This suggests that precipitation of Co/Fe in ZnO likely takes place at relatively low temperatures, thus explaining some of the discrepancies in the literature regarding magnetic properties of 3d metal-doped ZnO. (literal)
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