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Details for article 3 of 18 found articles
| Title: |
Color centers in Bi12SiO20 single crystals |
| Author: |
Panchenko, T. V. Truseyeva, N. A. Osetsky, Yu. G. |
| Appeared in: |
Ferroelectrics |
| Paging: | Volume 129 (1992) nr. 1 pages 113-118 |
| Year: |
1992-05-01 |
| Contents: |
The optical absorption spectra and photochromic effect of Bi12SiO20 pure, Al and Ga doped single crystals and crystals of nonstoichiometric composition have been investigated in the wavelength range between 8,000-26,000 cm-1. It is suggested that the mechanism of the color centers photo-generation takes place for Bi5+ ions tetrasites according to the following scheme: Bi5+ + 2e → Bi3+. The role of oxygen vacancies and Bi3+, Al3+ and Ga3+ ions in the lattice octasites of Bi12SiO20 crystals in the formation of the optical absorption shoulder is discussed. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 3 of 18 found articles
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