Abstract
The method of photostimulated electron emission is used to investigate the processes responsible for redistributing charges formed by photoionization of F centers in anion-defective corundum single crystals in an external electric field. It is shown that the observed features of the excitation spectra are due to conversion transitions between F and F + centers, whose probability in the surface layer of the crystal is much higher than in the interior because of the high excitation density and the presence of an electric field. The results obtained could be of interest for studying radiation-stimulated phenomena in dielectric materials.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
M. S. Aksel’rod, V. S. Kortov, and I. I. Mil’man, Izv. Akad. Nauk SSSR, Ser. Fiz. 52, 1363 (1988).
B. D. Evans and M. Stapelbroek, Phys. Rev. B 18, 7089 (1978).
A. B. Aleksandrov, É. D. Aluker, I. A. Vasil’ev, S. A. Nechaev, and S. A. Chernov, Introduction to the Radiation Physics and Chemistry of the Alkali-Halide Crystal Surfaces (Zinatne, Riga, 1989).
K. H. Lee and J. N. Crawford, Jr., Phys. Rev. B 19, 3217 (1979).
R. R. Atabekyan, R. K. Ezoyn, V. A. Gevorkyan, and V. L. Vinetskii, Phys. Status Solidi B 129, 321 (1985).
E. R. Hodgson, in 12th International Conference on Defects in Insulating Materials (Schloss Nordkirchen, 1992), Vol. 1., pp. 332–341.
Author information
Authors and Affiliations
Additional information
Pis’ma Zh. Tekh. Fiz. 25, 66–70 (October 12, 1999)
Rights and permissions
About this article
Cite this article
Kurtov, V.S., Mil’man, I.I. & Slesarev, A.I. Conversion of F⇆F + centers in anion-defective corundum crystals. Tech. Phys. Lett. 25, 786–788 (1999). https://doi.org/10.1134/1.1262635
Issue Date:
DOI: https://doi.org/10.1134/1.1262635