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arXiv · 1101.3704

Optical absorption and structure of impurity Ni$^{2+}$ center in tungstate-tellurite glass

V. G. Plotnichenko·V. O. Sokolov·G. E. Snopatin·M. F. Churbanov
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Abstract

Absorption spectra of Ni$^{2+}$ ions in 22WO$_3$--78TeO$_2$ tungstate-tellurite glass were studied and Ni$^{2+}$ extinction coefficient spectral dependence was derived in the 450 -- 2700 nm wavelength range. Computer modeling of the glass structure proved Ni$^{2+}$ ions to be in trigonal-distorted octahedral environment in the tungstate-tellurite glass. Tanabe-Sugano diagram for such an environment was calculated and good description of the observed spectrum of Ni$^{2+}$ ion was obtained. Basing on both absorption spectral range width and the extinction coefficient, nickel should be considered among the most strongly absorbing impurities in the tellurite glasses.

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V. G. Plotnichenko, V. O. Sokolov, G. E. Snopatin, M. F. Churbanov. 2011-01-19. Optical absorption and structure of impurity Ni$^{2+}$ center in tungstate-tellurite glass. https://doi.org/10.1016/j.jnoncrysol.2010.10.026

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