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Diffusion and aggregation of subsurface radiation defects in lithium fluoride nanocrystals

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Abstract

Lithium fluoride nanocrystals were irradiated by gamma rays at a temperature below the temperature corresponding to the mobility of anion vacancies. The kinetics of the aggregation of radiation-induced defects in subsurface layers of nanocrystals during annealing after irradiation was elucidated. The processes that could be used to determine the activation energy of the diffusion of anion vacancies were revealed. The value of this energy in subsurface layers was obtained. For subsurface layers, the concentrations ratio of vacancies and defects consisting of one vacancy and two electrons was found. The factors responsible for the differences in the values of the activation energies and concentration ratios in subsurface layers and in the bulk of the crystals were discussed.

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Authors and Affiliations

  1. Stepanov Institute of Physics, National Academy of Sciences of Belarus, pr. Nezavisimosti 68, Minsk, 220072, Belarus

    A. P. Voitovich, V. S. Kalinov, A. P. Stupak & L. P. Runets

  2. Irkutsk Branch, Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, ul. Lermontova 130a, Irkutsk, 664033, Russia

    E. F. Martynovich

Authors
  1. A. P. Voitovich
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  2. V. S. Kalinov
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  3. E. F. Martynovich
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  4. A. P. Stupak
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  5. L. P. Runets
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Correspondence to A. P. Voitovich.

Additional information

Original Russian Text © A.P. Voitovich, V.S. Kalinov, E.F. Martynovich, A.P. Stupak, L.P. Runets, 2015, published in Fizika Tverdogo Tela, 2015, Vol. 57, No. 9, pp. 1709–1714.

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Voitovich, A.P., Kalinov, V.S., Martynovich, E.F. et al. Diffusion and aggregation of subsurface radiation defects in lithium fluoride nanocrystals. Phys. Solid State 57, 1752–1758 (2015). https://doi.org/10.1134/S1063783415090334

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  • DOI: https://doi.org/10.1134/S1063783415090334

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