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Article
Microstructural origin for the piezoelectricity evolution in (K0.5Na0.5)NbO3-based lead-free ceramics
Journal of Applied Physics
  • Hanzheng Guo, Iowa State University
  • Shujun Zhang, Pennsylvania State University
  • Scott P. Beckman, Iowa State University
  • Xiaoli Tan, Iowa State University
Document Type
Article
Publication Date
10-15-2013
DOI
10.1063/1.4825213
Abstract

Chemically modified (K0.5 Na 0.5)NbO3 compositions with finely tuned polymorphic phase boundaries (PPBs) have shown excellent piezoelectric properties. The evolution of the domain morphology and crystal structure under applied electric fields of a model material, 0.948(K0.5Na 0.5)NbO3–0.052LiSbO3, was directly visualized using in situ transmission electron microscopy. The in situ observations correlate extremely well with measurements of the electromechanical response on bulk samples. It is found that the origin of the excellentpiezoelectric performance in this lead-free composition is due to a tilted monoclinic phase that emerges from the PPB when poling fields greater than 14 kV/cm are applied.

Comments

The following article appeared in Journal of Applied Physics 114 (2013): 154102 and may be found at http://dx.doi.org/10.1063/1.4825213.

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
2013-11-19
File Format
application/pdf
Citation Information
Hanzheng Guo, Shujun Zhang, Scott P. Beckman and Xiaoli Tan. "Microstructural origin for the piezoelectricity evolution in (K0.5Na0.5)NbO3-based lead-free ceramics" Journal of Applied Physics Vol. 114 (2013) p. 154102
Available at: http://works.bepress.com/xiaoli_tan/3/