Relaxor Properties of TlInS_2 Composites with Nanodomain State

摘要

Recent theoretical investigations predict that the thermal filling of trap centers could lead to an intricate sequence of phase transitions with unstable boundary state between the phases. This fact has motivated the experimental study of ferroelectric phase transitions in TlInS_2 (Mn) composites where the cationic impurities conform the capture levels (traps) at the bottom of the conduction band. In this paper the results of experimental investigation of dielectric, polarization and pyroelectric properties of TlInS_2 (Mn) composites are presented. It was shown that TlInS_2 (Mn) composites display all peculiarities that are typical for relaxor ferroelectrics.