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VOLUME 60 (1994) | ISSUE 2 | PAGE 109
Fast stage of the evolution of the nonequilibrium soliton structure of a dielectric
The evolution of a soliton structure after it has been abruptly driven into a state far from equilibrium is initially an accelerated process. The acceleration is greater, the greater the initial departure from equilibrium. Closer to equilibrium, deceleration causes the fast process to give way to a slow, thermal-activation process, as is characteristic of inhomogeneous systems. Distinctive features of the fast stage of the evolution and of its effect on the subsequent stages are identified. Experiments have been carried out by a dielectric method in the particular case of an Rb2ZnCl4 crystal, which is a ferroelectric with an incommensurate phase.