Domain reversal in relaxor ferroelectrics (1-x)Pb(Zn1/3Nb2/3)O3 -xPbTiO3 was observed using a high-resolution CCD (charge coupled device) sensor. This solid solution reveals that the phase transition diffuseness of pure lead zinc niobate decreases with increasing x. Single crystals with x > 0.11 (tetragonal phase) exhibit large sharp domains, and under an electric field domain walls move almost independently of each other. On the other hand, crystals with x < 0.05 (rhombohedral phase) show small ambiguous spindle-like domains, and the domain reversal occurs simultaneously in a certain size region so that each microdomain should change synchronously like cooperative phenomena. Crystals with 0.05 < x < 0.11 exhibit combination domain structures or the intermediate configurations of the above-mentioned two ranges, which correspond to the coexistence of the tetragonal and rhombohedral phases near the morphotropic phase boundary.
|Original language||English (US)|
|Number of pages||4|
|Journal||Ultrasonics Symposium Proceedings|
|State||Published - 1990|
All Science Journal Classification (ASJC) codes