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Effect of X-Ray Radiation on the Optical Properties of Photorefractive Bismuth-Silicate Crystals


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Abstract

The results of investigations of the optical-absorption spectra of bismuth-silicate (Bi12SiO20) single crystals are presented. The band-gap width and the characteristic Urbach energy are determined. The effect of preliminary X-ray irradiation on the behavior of the experimental spectral dependences and the values of the characteristic parameters induced by the bismuth-silicate defect structure is established.

About the authors

V. T. Avanesyan

Herzen State Pedagogical University of Russia

Author for correspondence.
Email: avanesyan@mail.ru
Russian Federation, St. Petersburg, 191186

I. V. Piskovatskova

Herzen State Pedagogical University of Russia

Email: avanesyan@mail.ru
Russian Federation, St. Petersburg, 191186

V. M. Stozharov

Herzen State Pedagogical University of Russia

Email: avanesyan@mail.ru
Russian Federation, St. Petersburg, 191186

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