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A raman scattering study of the phase transition in the ammonium oxyfluoride (NH4)3TiOF5

  • Lattice Dynamics and Phase Transitions
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Abstract

Raman spectra of a polycrystalline sample of the perovskite-like oxyfluoride (NH4)3TiOF5 are measured in the frequency region 100–3600 cm−1 at temperatures ranging from 91 to 370 K under hydrostatic pressures of up to 9 GPa, which include the range of the phase transition from the orientationally disordered cubic phase to the low-symmetry phase. Anomalies in the spectral parameters due to the phase transition are revealed in the range of vibrations of TiOF5 octahedral groups.

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Authors and Affiliations

  1. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036, Russia

    Yu. V. Gerasimova, A. S. Krylov & A. N. Vtyurin

  2. Siberian Federal University, Svobodnyĭ pr. 79, Krasnoyarsk, 660041, Russia

    Yu. V. Gerasimova, A. S. Krylov & A. N. Vtyurin

  3. Institute of Chemistry, Far-East Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022, Russia

    N. M. Laptash

  4. Institute of Mineralogy and Petrography, Siberian Branch, Universitetskiĭ pr. 3, Novosibirsk, 630090, Russia

    S. V. Goryaĭnov

Authors
  1. Yu. V. Gerasimova
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  2. A. S. Krylov
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  3. A. N. Vtyurin
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  4. N. M. Laptash
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  5. S. V. Goryaĭnov
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Corresponding author

Correspondence to A. N. Vtyurin.

Additional information

Original Russian Text © Yu.V. Gerasimova, A.S. Krylov, A.N. Vtyurin, N.M. Laptash, S.V. Goryaĭnov, 2008, published in Fizika Tverdogo Tela, 2008, Vol. 50, No. 8, pp. 1476–1479.

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Gerasimova, Y.V., Krylov, A.S., Vtyurin, A.N. et al. A raman scattering study of the phase transition in the ammonium oxyfluoride (NH4)3TiOF5 . Phys. Solid State 50, 1534–1537 (2008). https://doi.org/10.1134/S1063783408080246

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  • DOI: https://doi.org/10.1134/S1063783408080246

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