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Evolution of Lead Titanate Nanostructures from Nanoparticle Self-Assembly

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Ferroelectric nanostructures are promising building blocks for advanced electromechanical devices. In this paper, we report a hydrothermal synthesis of PbTiO3 nanoring and nanoring-nanowire hybrid structures. Evolution of the nanoring structure was suggested to be caused by the self-directed assembly of PbTiO3 nanoparticles, where polarization of the ferroelectric nanoparticles might direct the epitaxial arrangement. Vertically aligned NWs were grown epitaxially on the surfaces of the nanorings following the same morphological patterns. All the morphologies were found to simultaneously coexist due to the continuous nucleation and crystal growth during the entire growth period. This research presented a new growth behavior of ferroelectric nanocrystals from a wet-chemistry method. Understanding of the growth mechanism would enhance our capability of controlled synthesizing ferroelectric perovskite nanostructures at large scales and with low cost.
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Keywords: FERROELECTRIC; HYDROTHERMAL; NANOPARTICLE; NANOWIRE; PBTIO3; SELF-ASSEMBLY

Document Type: Research Article

Publication date: 2012-08-01

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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