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Electrical poling below coercive field for large piezoelectricity
Applied Physics Letters
  • Hanzheng Guo, Iowa State University
  • Cheng Ma, Iowa State University
  • Xiaoming Luo, Iowa State University
  • Xiaoli Tan, Iowa State University
Document Type
Article
Publication Date
3-6-2013
DOI
10.1063/1.4794866
Abstract

Isotropic polycrystalline ferroelectric ceramics have to be electrically poled to develop a net macroscopic polarization and hence piezoelectricity. It is well accepted that a sufficient poling can only be realized under an electric field that is much higher than the coercive field. In this study, we observed in (Bi1/2 Na 1/2)TiO3-BaTiO3 ceramics that large piezoelectricity can develop at poling fields far below the measured coercive field. Using in situ transmission electron microscopy, such an unusual behavior, is interpreted with the polarization alignment of polar nanodomains in the non-ergodic relaxor phase.

Comments

The following article appeared in Applied Physics Letters 102 (2013): 092902, and may be found at http://dx.doi.org/10.1063/1.4794866.

Rights
Copyright 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Copyright Owner
American Institute of Physics
Language
en
Date Available
2013-09-21
File Format
application/pdf
Citation Information
Hanzheng Guo, Cheng Ma, Xiaoming Luo and Xiaoli Tan. "Electrical poling below coercive field for large piezoelectricity" Applied Physics Letters Vol. 102 Iss. 9 (2013) p. 092902
Available at: http://works.bepress.com/xiaoli_tan/6/