Terahertz Time-Domain Spectroscopy of 0.73 Pb( Mg1/3 Nb2/3) O3-0.27 PbTiO3 Single Crystal.

Lead magnesium niobate titanate is an important ferroelectric material. In this study, the terahertz ( THz) transmission properties of a 0.73 Pb( Mg_1/3 Nb_2/3) O₃-0.27 PbTiO₃ single crystal were investigated using a time-domain spectroscopy method. Complex refractive index and dielectric dispersion functions were determined from the amplitude and phase information derived from time-domain responses. Based on calculations, it was concluded that the room-temperature dielectric constant of the single crystal equal to ~30 at 1 THz. This result could be a useful reference for development of ferroelectric-material-based THz components and devices. [ABSTRACT FROM AUTHOR]