Effect of poling regimes on domain structure and properties of PbTiO3-based piezoceramics

Abstract

1994) Effect of poling regimes on domain structure and properties of PbTiO3-based piezoceramics, Ferroelectrics, 160:1, 107-114 To link to this article: http://dx.Samples of piezoelectric PT-1 ceramics based o n PbTiO, modified by Ca, Nd, Bi and Mn have been studied. The poling d.c. and strong a x . field effect on the domain structure and electrical and physical properties (E&/E,, sf;, d,,, d,, , anisotropy d3Jd,,) has been determined. The formation of closed domainstructures with laminar series of 90" domains was established for "virgin" ceramics. The orientation of 90" domain boundaries normal to the electric field direction was found to take place under the strong ax. field. The further application of the d.c. poling field leads, mainly, to 180" domain reorientations that manifests itself in the rapid increase of piezoelectric coefficients and anisotropy under the relatively weak poling fields. It was established that the increased piezoelectric anisotropy is due to 180" and 90" domain reorientations.