Mössbauer study of 57 Fe in GaAs and GaP following 57 Mn+ implantation (Articolo in rivista)

Type
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  • Mössbauer study of 57 Fe in GaAs and GaP following 57 Mn+ implantation (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Alternative label
  • H. Masenda1, D. Naidoo1,2, K. Bharuth-Ram3, H. P. Gunnlaugsson4, G. Weyer4, W. B. Dlamini3, R. Mantovan5, R. Sielemann6, M. Fanciulli5,7, T. E. Mølholt8, S. Ólafsson8, G. Langouche9, K. Johnston10, the ISOLDE Collaboration10 (2010)
    Mössbauer study of 57 Fe in GaAs and GaP following 57 Mn+ implantation
    in Hyperfine interactions (Dordr., Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • H. Masenda1, D. Naidoo1,2, K. Bharuth-Ram3, H. P. Gunnlaugsson4, G. Weyer4, W. B. Dlamini3, R. Mantovan5, R. Sielemann6, M. Fanciulli5,7, T. E. Mølholt8, S. Ólafsson8, G. Langouche9, K. Johnston10, the ISOLDE Collaboration10 (literal)
Pagina inizio
  • 15 (literal)
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  • http://link.springer.com/article/10.1007/s10751-010-0215-2 (literal)
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  • 198 (literal)
Rivista
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  • 1. School of Physics, University of the Witwatersrand, Private Bag 3, Johannesburg, WITS 2050, South Africa 2. DST/NRF Centre of Excellence in Strong Materials, University of the Witwatersrand, Johannesburg, WITS 2050, South Africa 3. School of Physics, University of KwaZulu-Natal, Durban, 4001, South Africa 4. Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000, Århus C, Denmark 5. Laboratorio MDM CNR-IMM, 20041, Agrate Brianza (MB), Italy 6. Helmholtz-Zentrum Berlin für Materialien und Energie, 14109, Berlin, Germany 7. Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, Via R. Cozzi 53, 20125, Milano, Italy 8. Science Institute, University of Iceland, Dunhaga 3, 107, Reykjavik, Iceland 9. Instituut voor Kern- en Stralingsfysica, University of Leuven, 3001, Leuven, Belgium 10. EP Division, CERN, 1211, Geneva 23, Switzerland (literal)
Titolo
  • Mössbauer study of 57 Fe in GaAs and GaP following 57 Mn+ implantation (literal)
Abstract
  • Ion implantation provides a precise method of incorporating dopant atoms in semiconductors, provided lattice damage due to the implantation process can be annealed and the dopant atoms located on regular lattice sites. We have undertaken 57Fe emission Mössbauer spectroscopy measurements on GaAs and GaP single crystals following implantation of radioactive 57Mn + ions, to study the lattice sites of the implanted ions, the annealing of implantation induced damage and impurity-vacancy complexes formed. The Mössbauer spectra were analyzed with four spectral components: an asymmetric doublet (D1) attributed to Fe atoms in distorted environments due to implantation damage, two single lines, S1 assigned to Fe on substitutional Ga sites, and S2 to Fe on interstitial sites, and a low intensity symmetric doublet (D2) assigned to impurity-vacancy complexes. The variations in the extracted hyperfine parameters of D1 for both materials at high temperatures (T > 400 K) suggests changes in the immediate environment of the Fe impurity atoms and different bonding mechanism to the Mössbauer probe atom. The results show that the annealing of the radiation induced damage is more prominent in GaAs compared to GaP. (literal)
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