Kinetics of the electronic center annealing in Al2O3 crystals

Kuzovkov, V.; Kotomin, E.; Popov, A.

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Kinetics of the electronic center annealing in Al₂O₃ crystals

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Kotomin, E.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Kuzovkov, V., Kotomin, E., & Popov, A. (2018). Kinetics of the electronic center annealing in Al₂O₃ crystals. Journal of Nuclear Materials, 502, 295-300.

Cite as: https://hdl.handle.net/21.11116/0000-000E-D4D8-F

Abstract

The experimental annealing kinetics of the primary electronic F, F+ centers and dimer F-2 centers observed in Al2O3 produced under neutron irradiation were carefully analyzed. The developed theory takes into account the interstitial ion diffusion and recombination with immobile F-type and F-2-centers, as well as mutual sequential transformation with temperature of three types of experimentally observed dimer centers which differ by net charges (0, +1, +2) with respect to the host crystalline sites. The relative initial concentrations of three types of F-2 electronic defects before annealing are obtained, along with energy barriers between their ground states as well as the relaxation energies. (C) 2018 Elsevier B.V. All rights reserved.