"Splitting" of the hypersound attenuation maximum in the weak ferroelectric TSCC
Laiho R. , Levola T. , Prokhorova S. D. , Sinii I. G. , Tagantsev A. K. , Windsch W.
A "splitting" of the attenuation maximum into a relaxation part and a fluctuation part for hypersonic phonons which are propagating along the polar axis has been observed near the ferroelectric phase transition in TSCC crystals. This effect is characteristic of a ferroelectric with a weakly polar soft mode (a weak ferroelectric).