Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22433
Title: Ferroelectric domain configuration and piezoelectric responses in (001)-oriented PMN-PT films
Authors: Wang, J
Luo, EZ
Wong, KH
Chan, HLW 
Xu, JB
Wilson, IH
Choy, CL 
Keywords: Domain
Ferroelectrics
Films
PMN-PT
Issue Date: 2002
Publisher: Elsevier
Source: Materials characterization, 2002, v. 48, no. 2-3, p. 215-220 How to cite?
Journal: Materials characterization 
Abstract: (1-x)Pb(Mg1/3Nb2/3)-xPbTiO3 (x=0.3-0.35) ferroelectric thin films were prepared by pulsed laser deposition on (001) single crystal LaAlO3 substrates coated with YBa2Cu3O7 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 PbTiO3 content, indicating that the mechanism behind the field-induced strain depended on the composition and structure.
URI: http://hdl.handle.net/10397/22433
ISSN: 1044-5803
DOI: 10.1016/S1044-5803(02)00242-5
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