Article

Raman scattering in crystalline fluorosilicate hexahydrates of iron and manganese at a phase transition

V. V. EremenkoPhysicotechnical Institute of Low Temperatures, National Academy of Sciences, 310164, Kharkov, UkraineA. V. Peschanskiı̆Physicotechnical Institute of Low Temperatures, National Academy of Sciences, 310164, Kharkov, UkraineV. I. FominPhysicotechnical Institute of Low Temperatures, National Academy of Sciences, 310164, Kharkov, Ukraine

Physics of the Solid Statejournal1997en

ABI

Abstract

The work reports a Raman scattering study of FeSiF6·6H2O and MnSiF6·6H2O crystals within the 2–340 K temperature range. The crystals are ordered at low temperatures. Phase transition-induced changes in the spectra have been observed. An analysis of the number and polarization of the Raman lines has permitted determination of the symmetry of the high-and low-symmetry phases. A possible mechanism of the phase transition is proposed.

Topics

Inorganic Fluorides and Related Compounds Solid-state spectroscopy and crystallography Metallurgical Processes and Thermodynamics

Identifiers

DOI: 10.1134/1.1129980

Citations and references

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