Journal of the Physical Society of Japan · 1979 · 56 citations · 13 references
Natural SciencesChemistryPhysicsCondensed Matter PhysicsPhysical ChemistrySolid State PhysicsCrystallographyPhase TransitionsRaman SpectroscopyScattering TheoryIncommensurate TransitionsRaman ScatteringRaman SpectraScattering SpectraTemperature-dependent Raman SpectroscopyVibrational Mode Assignment
The Raman scattering spectra of Rb 2 ZnCl 4 single crystals were measured over the temperature range covering the successive phase transitions at T 1 =302 K and T 2 =189 K. The low-lying mode, whose frequency decreases as the prototypic-incommensurate phase transition roint T 1 is approached from below, has been observed for the c ( a a ) b scattering orientation as well as for the a ( c c ) b orientation, and is assigned to the amplitude mode. The results obtained are discussed in connection with the incommensurate phase transition.
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Symmetry of periodically distorted crystals
A. Janner · Physical review. B, Solid state · 1977 · 335 citations
Ferroelectricity in Rb<sub>2</sub>ZnCl<sub>4</sub>
Shozo Sawada, Y. Shiroishi, Akitoshi Yamamoto et al. · Journal of the Physical Society of Japan · 1977 · 162 citations