Rev.Adv.Mater.Sci. (RAMS)
No 1, Vol. 57, 2018, pages 116-120

THE EFFECT OF HEAT TREATMENT ON THE OPTICAL PROPERTIES
OF COPPER-CONTAINING LITHIUM-POTASSIUM-BORATE GLASSES

P.S. Shirshnev, V.L. Ugolkov, Zh.G. Snezhnaia, D.I. Panov, E.V. Shirshneva-Vaschenko,
S.N. Lipnitskaya, A.E. Romanov and V.E. Bougrov

Abstract

The paper presents the investigation of lithium-potassium-alumoborate glasses (0-25 mol.% Li2O) doped by copper ions. The effect of glass annealing on the Raman scattering patterns is discussed. It is shown that such an annealing results in drastic changes in the Raman scattering patterns for the glass with 10 mol.% of Li2O: the band at 481 cm-1 conventionally attributed to boron-oxygen bonds in metaborate rings disappears, while a set of narrow bands at 1236, 1500, and 1783 cm-1 is observed. We consider one of these bands, 1783 cm-1, as being the identifier of the formed Li(Al7B4O17) nanophase, XRD analysis supported the above suggestion. The effect of newly formed nanophase on the luminescence spectra is discussed.

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