UNIVERSAL RESPONSE OF DIELECTRIC BEHAVIOR OF SINGLE-CRYSTAL TGS

Triglycine sulfate (TGS) single crystal is studied in audio frequency range to investigate its ferroelectric contribution. Audio frequency c haracteristics of TGS shows universal dynamic response: chi(omega) = e psilon(omega)-epsilon(infinity) = A(T)(i omega)(n(T)-1) and its charac teristic exponent n has its minimum at the transition temperature. Thi s fact is in contrast with Jonscher's results, and we imply that this is because at the transition point, the crystal's restoring force is m inimum so its critical exponent should have a minimum at the transitio n temperature.