Glass Physics and Chemistry

, Volume 41, Issue 4, pp 378–384 | Cite as

Radiation-induced color centers in phosphogermanate glass-like materials

  • T. V. Bocharova
  • D. S. Sysoev
  • V. A. Aseev
  • N. O. Tagil’tseva


The effect of germanium oxide on the nomenclature and nature of color centers responsible for the induced adsorption of activated phosphate glass was investigated. The spectra of the gamma-irradiated glass based on La(PO3)3 with the GeO2 content not exceeding 40 mol % were recorded and analyzed. It was suggested that the existence of an isosbestic point indicated the interaction of two independent subsystems: phosphate and germinate ones. The model composition corresponded to 5GeO2 · 10La2O3 · 85P2O5. Partic-ipation of the Eu3+ in the suppression of the induced absorption in the region of 400 nm (25000 cm–1), which was due to the [PO3 2-] centers, was demonstrated. The spectra of the induced absorption of the glass produced under reductive conditions both the initial ones and the ones containing Tb2O3 were practically identical and demonstrated a lack of the induced absorption in the visible range of the spectrum.


phosphogermanate glass γ-irradiation spectra of induced optical absorption color centers PO32- and PO42- isosbestic point activator radiation-induced and chemically reduced germanium 


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Copyright information

© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  • T. V. Bocharova
    • 1
  • D. S. Sysoev
    • 1
  • V. A. Aseev
    • 2
  • N. O. Tagil’tseva
    • 3
  1. 1.Peter the Great St. Petersburg State Polytechnic UniversitySt. PetersburgRussia
  2. 2.St. Petersburg Scientific-Research University of Information Technologies, Mechanics, and OpticsSt. PetersburgRussia
  3. 3.St. Petersburg State Institute of Technology (Technical University)St. PetersburgRussia

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