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Ferroelectric domain configuration and piezoelectric responses in (001)-oriented PMN-PT films
(1− x)Pb(Mg 1/3Nb 2/3)− xPbTiO 3 ( x=0.3–0.35) ferroelectric thin films were prepared by pulsed laser deposition on (001) single crystal LaAlO 3 substrates coated with YBa 2Cu 3O 7 electrodes. X-ray diffraction (XRD) measurements showed the as-grown lead magnesium niobate (PMN)-lead titanate (PT) fi...
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Published in: | Materials characterization 2002-04, Vol.48 (2), p.215-220 |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | (1−
x)Pb(Mg
1/3Nb
2/3)−
xPbTiO
3 (
x=0.3–0.35) ferroelectric thin films were prepared by pulsed laser deposition on (001) single crystal LaAlO
3 substrates coated with YBa
2Cu
3O
7 electrodes. X-ray diffraction (XRD) measurements showed the as-grown lead magnesium niobate (PMN)-lead titanate (PT) films are epitaxial and have a (001)-oriented perovskite structure. A scanning force microscope (SFM) was employed to probe the domain configuration and piezoelectric response of the films. A comparison of the topographic and domain images showed that the large grains possessed a polydomain configuration. The average value of the piezo-response signal implied that there was a net spontaneous polarization pointing towards the bottom electrode in the as-grown films, presumably due to the presence of an internal field. The piezo-response hysteresis loop obtained while the films were subjected to a dc bias voltage exhibited a behavior that was dependent on the PbTiO
3 content, indicating that the mechanism behind the field-induced strain depended on the composition and structure. |
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ISSN: | 1044-5803 1873-4189 |
DOI: | 10.1016/S1044-5803(02)00242-5 |