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Hyperfine Interactions

, 237:81 | Cite as

Sensitivity of 57Fe emission Mössbauer spectroscopy to Ar and C induced defects in ZnO

  • K. Bharuth-RamEmail author
  • T. E. Mølholt
  • G. Langouche
  • S. Geburt
  • C. Ronning
  • T. B. Doyle
  • H. P. Gunnlaugsson
  • K. Johnston
  • R. Mantovan
  • H. Masenda
  • D. Naidoo
  • M. Ncube
  • H. Gislason
  • S. Ólafsson
  • G. Weyer
Article
Part of the following topical collections:
  1. Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME 2015), Hamburg, Germany, 13-18 September 2015

Abstract

Emission Mössbauer Spectroscopy (eMS) measurements, following low fluence (<1012 cm−2) implantation of 57Mn (t 1/2 = 1.5 min.) into ZnO single crystals pre-implanted with Ar and C ions, has been utilized to test the sensitivity of the 57Fe eMS technique to the different types of defects generated by the different ion species. The dominant feature of the Mössbauer spectrum of the Ar implanted ZnO sample was a magnetic hyperfine field distribution component, attributed to paramagnetic Fe3+, while that of the C implanted sample was a doublet attributed to substitutional Fe2+ forming a complex with the C dopant ions in the 2 state at O vacancies. Magnetization measurements on the two samples, on the other hand, yield practically identical m(H) curves. The distinctly different eMS spectra of the two samples display the sensitivity of the probe nucleus to the defects produced by the different ion species.

Keywords

ZnO Ar and C implantation Emission Mössbauer Spectroscopy Defect sensitivity 

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • K. Bharuth-Ram
    • 1
    Email author
  • T. E. Mølholt
    • 2
  • G. Langouche
    • 3
  • S. Geburt
    • 4
  • C. Ronning
    • 4
  • T. B. Doyle
    • 5
    • 6
  • H. P. Gunnlaugsson
    • 2
  • K. Johnston
    • 2
  • R. Mantovan
    • 7
  • H. Masenda
    • 8
  • D. Naidoo
    • 8
  • M. Ncube
    • 8
  • H. Gislason
    • 9
  • S. Ólafsson
    • 9
  • G. Weyer
    • 10
  1. 1.School of PhysicsDurban University of TechnologyDurbanSouth Africa
  2. 2.PH Department, ISOLDE/CERNGenevaSwitzerland
  3. 3.Instituut voor Kern-en StralingsfysicaKU Leuven, University of LeuvenLeuvenBelgium
  4. 4.Institute for Solid State PhysicsFriedrich-Schiller University of JenaJenaGermany
  5. 5.iThemba LABSWestern Cape ProvinceSouth Africa
  6. 6.School of Chemistry and PhysicsUniversity of KwaZulu-NatalDurbanSouth Africa
  7. 7.Laboratorio MDM, IMM-CNRAgrate BrianzaItaly
  8. 8.School of PhysicsUniversity of the WitwatersrandJohannesburgSouth Africa
  9. 9.Science InstituteUniversity of IcelandReykjavíkIceland
  10. 10.Department of Physics and AstronomyUniversity of AarhusAarhusDenmark

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