Affordable Access

Mechanism of polarization response in the ergodic phase of a relaxor ferroelectric

Authors
Publication Date
Source
Infoscience @ EPFL
Keywords
  • Lead Magnesium Niobate
  • Pbmg1/3Nb2/3O3
  • Transition
  • Model
  • Dynamics
External links

Abstract

It is shown that the effects of large de bias and ac driving fields on the dielectric permittivity of single crystals of PbMg1/3Nb2/3O3 (PMN) relaxer ferroelectric exhibit very different behavior, including anisotropy and sign of the effect, which is traced up to the high-temperature interval in the ergodic phase. The observed phenomena strongly suggest that in the ergodic phase of PMN the dielectric response to the ac field is controlled by a side-way motion of the interphase boundaries of the polar regions, rather than by the thermally activated reorientations of the local spontaneous polarization.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments
F