Hyperfine Interactions

, Volume 226, Issue 1–3, pp 389–396

Characterization of Fe states in dilute 57Mn implanted SnO2 film

  • H. P. Gunnlaugsson
  • K. Nomura
  • T. E. Mølholt
  • S. Shayestehaminzadeh
  • K. Johnston
  • R. Mantovan
  • H. Masenda
  • M. Ncube
  • K. Bharuth-Ram
  • H. Gislason
  • G. Langouche
  • D. Naidoo
  • S. Ólafsson
  • G. Weyer
  • the ISOLDE Collaboration
Article

Abstract

States of dilute Fe in SnO2 have been monitored using 57Fe emission Mössbauer spectroscopy following implantation of 57Mn (T1/2 = 85.4 s) in the temperature range from 143 K to 711 K. A sharp annealing stage is observed at ~330 K where the Fe3 + /Fe2 +  ratio shows a marked increase. It is suggested that this annealing stage is due to the dissociation of Mn-VO pairs during the lifetime of 57Mn; the activation energy for this dissociation is estimated to be 0.9(1) eV. Fe3 +  is found in a paramagnetic state showing spin-lattice relaxation rates consistent with an expected T2 dependence derived for a Raman process. In addition, a sharp lined doublet in the Mössbauer spectra is interpreted as due to recoil produced interstitial Fe.

Keywords

SnO2 57Mn implantation Emission Mössbauer spectroscopy Defects 

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • H. P. Gunnlaugsson
    • 1
  • K. Nomura
    • 2
  • T. E. Mølholt
    • 3
  • S. Shayestehaminzadeh
    • 3
  • K. Johnston
    • 4
  • R. Mantovan
    • 5
  • H. Masenda
    • 6
  • M. Ncube
    • 6
  • K. Bharuth-Ram
    • 7
  • H. Gislason
    • 3
  • G. Langouche
    • 8
  • D. Naidoo
    • 6
  • S. Ólafsson
    • 3
  • G. Weyer
    • 1
  • the ISOLDE Collaboration
  1. 1.Department of Physics and AstronomyAarhus UniversityAarhusDenmark
  2. 2.School of EngineeringThe University of TokyoTokyoJapan
  3. 3.Science InstituteUniversity of IcelandReykjavíkIceland
  4. 4.PH DepartmentISOLDE/CERNGeneva 23Switzerland
  5. 5.Laboratorio MDMIMM-CNRAgrate BrianzaItaly
  6. 6.School of PhysicsUniversity of the WitwatersrandJohannesburgSouth Africa
  7. 7.School of PhysicsDurban University of TechnologyDurbanSouth Africa
  8. 8.Instituut voor Kern-en Stralings fysikaUniversity of LeuvenLeuvenBelgium

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