A. Lushchik, A. Podelinska, V. Seeman, E. Shablonin, E. A. Kotomin* and V. N. Kuzovkov,
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Open Questions on the Thermal Stability of Primary Electronic Centers in Irradiated MgO Single Crystals
Basic properties of the simplest radiation defect, the F+ center (an oxygen vacancy with a trapped electron), in the simplest oxide material (MgO with a cubic lattice structure) remain for a long time a subject of discussion, in light of highly contradictory literature data. In this paper, new data on the electron paramagnetic resonance (EPR) and optical absorption measurements for the neutron- and energetic-ion-irradiated (70 MeV Ar) MgO single crystals are discussed. Theoretical analysis of the diffusion-controlled F+ center isochronal annealing is performed; the obtained migration energies for oxygen interstitials are discussed in light of the available calculations on the mobility of both neutral and charged oxygen interstitials in metal oxides.
期刊介绍：
The Journal of Physical Chemistry A/B/C is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and chemical physicists.
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