Dynamical domain observation in relaxor ferroelectrics

Remina Ujiie, Kenji Uchino

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Abstract

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 languageEnglish (US)
Pages (from-to)725-728
Number of pages4
JournalUltrasonics Symposium Proceedings
Volume2
StatePublished - 1990

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

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