1. Influence of domain size on the scaling effects in Pb(Mg1/3Nb2/3)O3–PbTiO3 ferroelectric crystals
- Author
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Lin, Dabin, Lee, Hyeong Jae, Zhang, Shujun, Li, Fei, Li, Zhenrong, Xu, Zhuo, and Shrout, Thomas R.
- Subjects
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FERROELECTRIC crystals , *PIEZOELECTRICITY , *DIELECTRICS , *TRANSDUCERS , *ELECTRIC properties of crystals , *PULSE circuits - Abstract
The property degradation observed in thin Pb(Mg1/3Nb2/3)O3–PbTiO3 (PMN–PT) crystals is believed to relate to large domains and subsequent clamping induced by the surface boundary. In this work, the properties were investigated as function of domain size, using controlled poling. The degraded piezoelectric and dielectric properties of thin PMN–PT were found to increase significantly with decreasing domain size. Furthermore, the fine domain structure was found to be stable at 3kVcm−1 after 7.0×105 negative-pulse cycles. These properties make PMN–PT crystals suitable for high-frequency (>20MHz) ultrasound transducers. [Copyright &y& Elsevier]
- Published
- 2011
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