The Raman scattering spectra of Rb 2 ZnCl 4 single crystals were measured over the temperature range covering the successive phase transitions. The soft mode, whose frequency decreases as the transition point T 1 =302 K is approached from below, was observed for the a ( c c ) b scattering orientation. This soft mode corresponds to the so-called amplitude mode in the incommensurate phase. The possibility of the anticrossing of two modes, one of which is the soft mode, is suggested.
No takes yet. Share an insight, caveat, or question.
Wada et al. (1978) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: