Abstract
The Raman spectra of Rb2KScF6 elpasolite crystals are studied in the pressure range up to 7 GPa. A phase transition is revealed at a pressure of approximately 1 GPa. Analysis of the changes in the spectral parameters shows that the phase transition is accompanied by a doubling of the volume of the primitive cell in the initial cubic phase. Judging from the character of the variations in the pressure dependences of the frequency of the observed vibrations, there can exist another transition to the phase with a lower symmetry at a pressure of approximately 2.1 GPa.
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Original Russian Text © A.N. Vtyurin, A.S. Krylov, S.V. Goryaĭnov, S.N. Krylova, V.N. Voronov, 2006, published in Fizika Tverdogo Tela, 2006, Vol. 48, No. 6, pp. 1007–1009.
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Vtyurin, A.N., Krylov, A.S., Goryaĭnov, S.V. et al. Raman spectroscopic study of the phase transitions induced by hydrostatic pressure in a Rb2KScF6 crystal. Phys. Solid State 48, 1070–1072 (2006). https://doi.org/10.1134/S1063783406060163
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DOI: https://doi.org/10.1134/S1063783406060163