Determination of elastic constants and study of dielectric constant in tgs by brillouin scattering

Abstract

The elastic constants of TGS are measured at room temperature. The study of the temperature dependence of shift and broadening of the Brillouin line which corresponds to a wave propagating along [0, 0, 1] gives information about the high frequency dielectric constant ε22(ω). A Debye type relaxation of the dielectric constant with a single relaxation time occurs.