Dynamics of relaxation processes in a triglycine selenate single crystal in a ferroelectric phase

The deviation of the relaxation spectrum from the Debye type is studied experimentally and the presence of the non-Debye relaxation is shown, which is defined in different temperature ranges either by proton multiposition transitions below the Curie point T$_С$ or relaxation domain and interphase boundaries in the vicinity of T$_С$. For triglycine selenate, the methods of analysis of dielectric non-Debye spectra are used.