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VOLUME 58 (1993) | ISSUE 8 | PAGE 625
Time evolution of an incommensurate superstructure of a crystal near a structural phase transition to a homogeneous phase
The time evolution of a soliton system in an incommensurate phase of a ferroelectric, which has undergone an abrupt transition to a nonequilibrium state, has been determined experimentally. The anomalous permittivity and the corresponding distance between solitons have a logarithmic time evolution. The law describing this evolution agrees qualitatively with the interpretation that the relaxation of the inhomogeneous system is a thermally activated process governed by metastability effects.