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Characterization of Fe states in dilute 57Mn implanted SnO 2 film

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Abstract

States of dilute Fe in SnO2 have been monitored using 57Fe emission Mössbauer spectroscopy following implantation of 57Mn (T 1/2 = 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 T 2 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.

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Authors and Affiliations

  1. Department of Physics and Astronomy, Aarhus University, 8000, Aarhus, Denmark

    H. P. Gunnlaugsson & G. Weyer

  2. School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan

    K. Nomura

  3. Science Institute, University of Iceland, 107, Reykjavík, Iceland

    T. E. Mølholt, S. Shayestehaminzadeh, H. Gislason & S. Ólafsson

  4. PH Department, ISOLDE/CERN, 1211, Geneva 23, Switzerland

    K. Johnston

  5. Laboratorio MDM, IMM-CNR, Via Olivetti 2, 20864, Agrate Brianza, MB, Italy

    R. Mantovan

  6. School of Physics, University of the Witwatersrand, Johannesburg, South Africa

    H. Masenda, M. Ncube & D. Naidoo

  7. School of Physics, Durban University of Technology, Durban, 4000, South Africa

    K. Bharuth-Ram

  8. Instituut voor Kern-en Stralings fysika, University of Leuven, 3001, Leuven, Belgium

    G. Langouche

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  1. H. P. Gunnlaugsson
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  2. K. Nomura
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  3. T. E. Mølholt
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  4. S. Shayestehaminzadeh
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  5. K. Johnston
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  6. R. Mantovan
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  7. H. Masenda
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  9. K. Bharuth-Ram
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  10. H. Gislason
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  11. G. Langouche
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  12. D. Naidoo
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  13. S. Ólafsson
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  14. G. Weyer
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the ISOLDE Collaboration

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Correspondence to H. P. Gunnlaugsson.

Additional information

Proceedings of the 32nd International Conference on the Applications of the Mössbauer Effect (ICAME 2013) held in Opatija, Croatia, 1–6 September 2013.

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Gunnlaugsson, H.P., Nomura, K., Mølholt, T.E. et al. Characterization of Fe states in dilute 57Mn implanted SnO 2 film. Hyperfine Interact 226, 389–396 (2014). https://doi.org/10.1007/s10751-013-0936-0

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  • DOI: https://doi.org/10.1007/s10751-013-0936-0

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