Hikita, T.Wang, J. T.Schnackenberg, P. T.Schmidt, V. Hugo2015-04-172015-04-171985-01T. Hikita, J.T. Wang, P.T. Schnackenberg, and V.H. Schmidt, “Anisotropy in anomalies of hypersound velocity and attenuation in ferroelectric TSCC,” Japanese Journal of Applied Physics. 24, Suppl. 24-2, 494-496 (1985)0021-4922https://scholarworks.montana.edu/handle/1/8993From Brillouin shift and linewidth of longitudinal phonons propagating along the [100] and [001] directions of TSCC, the polarization relaxation time was calculated to be τ=3.1×10-12/(Tc-T) sec below the transition temperature Tc. The anomalies in the longitudinal phonons of the [010] propagation were carefully examined using an annealed crystal of excellent quality. No essential difference was observed between the velocities of a normal and high quality crystals. The relaxation time was deduced as a function of temperature from the observed anomalies in the velocity and linewidth. Spectra are observed for nearly forward scattering from the q\varparallel[010] phonons.Condensed matter physicsElectromagneticsMaterials scienceArticle