Influence of Domain Size on the Scaling Effects in Pb(Mg1/3Nb2/3)O3-PbTiO3 Ferroelectric Crystals

The property degradation observed in thin Pb(Mg(1/3)Nb(2/3))O(3)-PbTiO(3) (PMN-PT) crystals is believed to relate to large domains and subsequent clamping induced by surface-boundary. In this work, the properties were investigated as function of domain size, using controlled poling. The degraded pie...

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Bibliographic Details
Published in:Scripta materialia 2011-06, Vol.64 (12), p.1149-1151
Main Authors: Lin, Dabin, Lee, Hyeong Jae, Zhang, Shujun, Li, Fei, Li, Zhenrong, Xu, Zhuo, Shrout, Thomas R
Format: Article
Language:English
Subjects:
Boundaries
Crystals
Degradation
Deoxidizing
Dielectric properties
Ferroelectric crystals
Piezoelectricity
Ultrasound
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Summary:The property degradation observed in thin Pb(Mg(1/3)Nb(2/3))O(3)-PbTiO(3) (PMN-PT) crystals is believed to relate to large domains and subsequent clamping induced by 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, by decreasing domain size. Furthermore, the fine domain structure was found to be stable at 3kV/cm after 7.0×10(5) negative-pulse cycles, hence, enabling PMN-PT crystals for high-frequency (>20 MHz) ultrasound-transducers.
ISSN:1359-6462
DOI:10.1016/j.scriptamat.2011.03.018