Document Type
Article
Publication Date
8-31-2009
Journal or Book Title
Journal of Applied Physics
Volume
106
Issue
4
First Page
044107
DOI
10.1063/1.3207827
Abstract
Prior studies have shown that a field-induced ferroelectricity in ceramics with general chemical formula (1−x−y)(Bi1/2Na1/2)TiO3–xBaTiO3–y(K0.5Na0.5)NbO3 and a very low remanent strain can produce very large piezoelectric strains. Here we show that both the longitudinal and transverse strains gradually change with applied electric fields even during the transition from the nonferroelectric to the ferroelectric state, in contrast to known Pb-containing antiferroelectrics. Hence, the volume change and, in turn, the phase transition can be affected using uniaxial compressive stresses, and the effect on ferroelectricity can thus be assessed. It is found that the 0.94(Bi1/2Na1/2)TiO3–0.05BaTiO3–0.01(K0.5Na0.5)NbO3ceramic (largely ferroelectric), with a rhombohedral R3c symmetry, displays large ferroelectric domains, significant ferroelastic deformation, and large remanent electrical polarizations even at a 250 MPa compressive stress. In comparison, the 0.91(Bi1/2Na1/2)TiO3–0.07BaTiO3–0.02(K0.5Na0.5)NbO3ceramic (largely nonferroelectric) possesses characteristics of a relaxor ferroelectricceramic, including a pseudocubic structure, limited ferroelastic deformation, and low remanent polarization. The results are discussed with respect of the proposed antiferroelectric nature of the nonferroelectric state.
Rights
Copyright 2009 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
Copyright Date
2009
Language
en
File Format
application/pdf
Recommended Citation
Tan, Xiaoli; Aulbach, E.; Jo, W.; Granzow, T.; Kling, J.; Marsilius, M.; Kleebe, H.-J.; and Rodel, J., "Effect of uniaxial stress on ferroelectric behavior of (Bi1/2Na1/2)TiO3-based lead-free piezoelectric ceramics" (2009). Materials Science and Engineering Publications. 11.
https://lib.dr.iastate.edu/mse_pubs/11
Comments
The following article appeared in Journal of Applied Physics 106 (2009): 044107 and may be found at http://dx.doi.org/10.1063/1.3207827.