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Effect of Crystal Orientation on Piezoelectric Response of Single-Crystal Piezoelectric Layers

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The piezoelectric response of a piezoelectric material is strongly dependent on the relative direction between external loading and the poling direction. In this study, we present a three-dimensional finite element model to analyze the effect of the angle between the loading direction and the poling direction on the deformation state and electric displacement in a piezoelectric layer. The results show that, under the action of electric loading, the apparent longitudinal piezoelectric coefficient can be determined from the ratio of the displacement difference to the potential difference between the top and bottom surfaces, which is a function of the crystal orientation. The deformation-induced electric potential difference between the top and bottom surfaces of the piezoelectric layer is dependent on the expansion/shrinkage of side surfaces when subject to mechanical loading.
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Keywords: PIEZOELECTRIC RESPONSE; SIMPLE COMPRESSION; THIN FILMS

Document Type: Research Article

Publication date: December 1, 2012

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  • Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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