DOMAIN-WALLS IN ONE-DIMENSIONAL 3-PERIODIC STRUCTURE

The static and dynamic properties of domain walls in the incommensurat e phase near the lock-in transition was studied numerically in the fra me of the elastically hinged molecule model of crystal which was recen tly proposed by the present authors. The case of discommensurations in the 3-periodic commensurate phase was discussed and the analytical ex pression for the displacements near the domain wall was derived in con tinum approximation. The interaction of the domain pattern with the ex ternal field, processes of collision and breakup of domain walls were investigated.