Abstract
Room-temperature polarized Raman spectra of NaIn(WO4)2 single crystals have been studied in detail. We have identified all of the vibrational modes corresponding to the assumed C2/c space group of this material. Using high-temperature Raman spectroscopy, we have studied the structure of NaIn(WO4)2 in the range 300–1600 K. The results indicate that NaIn(WO4)2 melts incongruently at 1253 K, with the formation of solid In2(WO4)3. Above 1350 K, the melt becomes homogeneous. In contrast to crystalline NaIn(WO4)2, which contains tungsten in octahedral oxygen coordination, the tungsten-oxygen groups in the homogeneous melt have the form of isolated [WO4] tetrahedra. Quenching of a homogenized NaIn(WO4)2 melt is found to result in the formation of a glassy phase.
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Basiev, T.T., Sobol, A.A., Zverev, P.G., et al., Comparative Spontaneous Raman Spectroscopy of Crystals for Raman Lasers, Appl. Opt., 1999, vol. 38, no. 3, pp. 594–598.
Basiev, T.T., Sobol, A.A., Zverev, P.G., et al., Raman Spectroscopy of Crystals for Stimulated Raman Scattering, Opt. Mater., 1999, vol. 11, no. 4, pp. 307–314.
Basiev, T.T., Sobol, A.A., Voronko, Y.K., et al., Spontaneous Raman Spectroscopy of Tungstate and Molybdate Crystals for Raman Lasers, Opt. Mater., 2000, vol. 15, no. 3, pp. 205–216.
Basiev, T.T, Sobol, A.A, Zverev, P.G, et al., Raman Spectroscopy of Tungstate Crystals for Raman Lasers, SPIE Proc. Laser 98 Conf., Tucson, 1998, pp. 712–719.
Kokh, A.E., Kononova, N.G., Bekker, T.B., et al., Growth and Luminescence Properties of NaIn(WO4)2 Crystal, Cryst. Growth Des., 2007, vol. 7, no. 6, pp. 1042–1043.
Hanusa, J., Macalik, L., Maczka, M., et al., Vibrational Characteristics of the Double Oxygen Bridge in the NaIn(WO4)2 and NaSc(WO4)2 Tungstates with Wolframite Structure, J. Mol. Struct., 1999, vol. 511–512, pp. 85–106.
Voronko, Yu.K., Kudryavtsev, A.B., Osiko, V.V., and Sobol, A.A., High-Temperature Raman Scattering Studies of Melt Structure and Crystallization Processes, Rost Krist., 1988, vol. 16, pp. 178–195.
Kravchenko, V.B., X-Ray Diffraction Study of NaIn(WO4)2, Zh. Strukt. Khim., 1971, vol. 12, no. 6, pp. 1108–1110.
Trunov, V.K., Efremov, V.A., and Velikodnyi, Yu.A., Kristallokhimiya i svoistva dvoinykh molibdatov i vol’framatov (Crystal Chemistry and Properties of Double Molybdates and Tungstates), Leningrad: Nauka, 1986.
Poulet, H. and Mathieu, J.P., Vibrational Spectra and Symmetry of Crystals, Paris: Gordon and Breach, 1970.
Voron’ko, Yu.K., Sobol’, A.A., Ushakov, S.N., and Tsimbal, L.I., Raman Spectra and Phase Transformations of the MLn(WO4)2 (M = Na, K; Ln = La, Gd, Y, Yb) Tungstates, Neorg. Mater., 2000, vol. 36, no. 9, pp. 1130–1136 [Inorg. Mater. (Engl. Transl.), vol. 36, no. 9, pp. 947–953].
Voron’ko, Yu.K. and Sobol’, A.A., Influence of Cations on the Vibrational Spectra and Structure of [WO4] Complexes in Molten Tungstates, Neorg. Mater., 2005, vol. 41, no. 4, pp. 493–502 [Inorg. Mater. (Engl. Transl.), vol. 41, no. 4, pp.420–428].
Sivasubramanian, V., Ravindram, T.R., Nithya, R., and Arora, A.K., Structural Phase Transition in Indium Tungstate, J. Appl. Phys., 2004, vol. 96, no. 1, pp. 387–392.
Karpov, V.N. and Korotkevich, I.B., WO3-R2O3 (R = Ga, In) Systems, Zh. Neorg. Khim., 1973, vol. 18, no. 2, pp. 570–571.
Karpov, V.N., Korotkevich, I.B., Minkova, M.M., and Sorokina, O.V., M2WO4-In2(WO4)3 Systems, Zh. Neorg. Khim., 1973, vol. 18, no. 5, pp. 1341–1345.
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Original Russian Text © Yu.K. Voronko, A.A. Sobol, V.E. Shukshin, P.P. Fedorov, A.E. Kokh, N.G. Kononova, 2009, published in Neorganicheskie Materialy, 2009, Vol. 45, No. 2, pp. 219–226.
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Voronko, Y.K., Sobol, A.A., Shukshin, V.E. et al. Raman spectra and structure of tungsten-oxygen groups in crystalline, molten, and glassy NaIn(WO4)2 . Inorg Mater 45, 182–188 (2009). https://doi.org/10.1134/S0020168509020137
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DOI: https://doi.org/10.1134/S0020168509020137