This article is cited in 2 papers

Optical properties

Observation of an intermediate phase in the K$_3$Na(CrO$_4$)$_2$ ferroelastic by Raman scattering

Yu. È. Kitaev^a, T. I. Maksimova^a, K. Hermanowicz^b, M. Mączka^b, J. Hanuza<sup>b

a</sup> Ioffe Institute, St. Petersburg
^b Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland

Abstract: This paper reports on the first study in K$_3$Na(CrO$_4$)$_2$ crystals of Raman spectra within a broad temperature interval of 4–300 K. The study has revealed significant variations in the intensity and shape of the Raman lines at $T$ = 150 K; a group theory analysis has revealed that the structural phase transition in this ferroelastic proceeds in two stages through an intermediate phase: $P\bar{3}m1\to C2/m\to C2/c$.

Received: 14.07.2011

 English version: Physics of the Solid State, 2012, 54:1, 134–139

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