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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
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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.

The following article appeared in Applied Physics Letters 102 (2013): 092902, and may be found at

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.
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American Institute of Physics
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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
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