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Title: Raman spectra and phase transitions in Rb{sub 2}KInF{sub 6} elpasolite

Abstract

The Raman spectra of Rb{sub 2}KInF{sub 6} elpasolite crystal have been studied in a wide temperature range, including two phase transitions: from the cubic phase to the tetragonal phase and then to the monoclinic phase. Several anomalies of internal modes of InF{sub 6} octahedra and low-frequency lattice vibrations, which are related to the structural changes at the transition points, have been found and quantitatively analyzed. The results of a quantitative analysis of the temperature dependences of the parameters of spectral lines are in good agreement with the thermodynamic data on the phase transitions.

Authors:
; ;  [1]; ;  [2]; ;  [1]
  1. Russian Academy of Sciences, Kirensky Institute of Physics, Siberian Branch (Russian Federation)
  2. Russian Academy of Sciences, Institute of Automation and Electrometry, Siberian Branch (Russian Federation)
Publication Date:
OSTI Identifier:
22054352
Resource Type:
Journal Article
Journal Name:
Crystallography Reports
Additional Journal Information:
Journal Volume: 56; Journal Issue: 1; Other Information: Copyright (c) 2011 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7745
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTALS; FLUORIDES; INDIUM COMPOUNDS; LATTICE VIBRATIONS; MONOCLINIC LATTICES; PHASE TRANSFORMATIONS; POTASSIUM COMPOUNDS; RAMAN SPECTRA; RUBIDIUM COMPOUNDS; TEMPERATURE DEPENDENCE

Citation Formats

Krylov, A. S., Krylova, S. N., E-mail: slanky@iph.krasn.ru, Vtyurin, A. N., Surovtsev, N. V., Adishev, S. V., Voronov, V. N., and Oreshonkov, A. S. Raman spectra and phase transitions in Rb{sub 2}KInF{sub 6} elpasolite. United States: N. p., 2011. Web. doi:10.1134/S1063774511010159.
Krylov, A. S., Krylova, S. N., E-mail: slanky@iph.krasn.ru, Vtyurin, A. N., Surovtsev, N. V., Adishev, S. V., Voronov, V. N., & Oreshonkov, A. S. Raman spectra and phase transitions in Rb{sub 2}KInF{sub 6} elpasolite. United States. doi:10.1134/S1063774511010159.
Krylov, A. S., Krylova, S. N., E-mail: slanky@iph.krasn.ru, Vtyurin, A. N., Surovtsev, N. V., Adishev, S. V., Voronov, V. N., and Oreshonkov, A. S. Sat . "Raman spectra and phase transitions in Rb{sub 2}KInF{sub 6} elpasolite". United States. doi:10.1134/S1063774511010159.
@article{osti_22054352,
title = {Raman spectra and phase transitions in Rb{sub 2}KInF{sub 6} elpasolite},
author = {Krylov, A. S. and Krylova, S. N., E-mail: slanky@iph.krasn.ru and Vtyurin, A. N. and Surovtsev, N. V. and Adishev, S. V. and Voronov, V. N. and Oreshonkov, A. S.},
abstractNote = {The Raman spectra of Rb{sub 2}KInF{sub 6} elpasolite crystal have been studied in a wide temperature range, including two phase transitions: from the cubic phase to the tetragonal phase and then to the monoclinic phase. Several anomalies of internal modes of InF{sub 6} octahedra and low-frequency lattice vibrations, which are related to the structural changes at the transition points, have been found and quantitatively analyzed. The results of a quantitative analysis of the temperature dependences of the parameters of spectral lines are in good agreement with the thermodynamic data on the phase transitions.},
doi = {10.1134/S1063774511010159},
journal = {Crystallography Reports},
issn = {1063-7745},
number = 1,
volume = 56,
place = {United States},
year = {2011},
month = {1}
}