Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4231
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Title: Effects of strain gradient on charge offsets and pyroelectric properties of ferroelectric thin films
Authors: Zheng, Y
Wang, B
Woo, CH 
Issue Date: 7-Aug-2006
Source: Applied physics letters, 7 Aug. 2006, v. 89, no. 6, 062904, p. 1-3
Abstract: The Landau-Ginzburg-Devonshire theory is used to study the effects of the strain gradient due to the epitaxial stresses in ferroelectric thin films sandwiched between two different substrates. The polarization in the film is found to be nonuniform, resulting in charge offsets and an asymmetric hysteresis response with characteristics similar to those in compositionally graded ferroelectric materials. The authors’ results suggest that the charge offset and pyroelectric effects can also be produced with effect of the strain gradient in film. In addition, such effects are found to be sensitive to an applied load.
Keywords: Ferroelectric thin films
Pyroelectricity
Internal stresses
Dielectric polarisation
Dielectric hysteresis
Publisher: American Institute of Physics
Journal: Applied physics letters 
ISSN: 0003-6951
EISSN: 1077-3118
DOI: 10.1063/1.2335369
Rights: © 2006 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. The following article appeared in Y. Zheng, B. Wang & C. H. Woo, Appl. Phys. Lett. 89, 062904 (2006) and may be found at http://apl.aip.org/resource/1/applab/v89/i6/p062904_s1
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