Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4353
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Title: Synthesis, characterization and ferroelectric properties of lead-free K₀.₅Na₀.₅NbO₃nanotube arrays
Authors: Zhou, D
Gu, H
Hu, Y
Tian, H
Wang, Z
Qian, Z
Wang, Y 
Issue Date: 1-Jun-2011
Source: Journal of applied physics, 1 June 2011, v. 109, no. 11, 114104, p. 1-5
Abstract: Lead-free K₀.₅ Na₀.₅ NbO₃(KNN) nanotube arrays were synthesized by a sol-gel method with anodic aluminum oxide templates. The obtained KNN nanotubes exhibited a polycrystalline and monoclinic perovskite structure with diameters of ~200 nm and wall thickness of ~30–40 nm, respectively. The polarization-electric loop curve of the nanotubes array were examined showing the values of 2Pᵣ and 2E[sub c] at about 3.4 μC/cm² and 13 kV/cm, respectively, under a maximum electric field of 12.5 kV/cm. The piezoelectric characteristics of individual KNN nanotube array was also identified through piezoresponse force microscopy.
Keywords: Dielectric hysteresis
Dielectric polarisation
Ferroelectric materials
Nanofabrication
Nanotubes
Piezoelectricity
Potassium compounds
Sodium compounds
Sol-gel processing
Publisher: American Institute of Physics
Journal: Journal of applied physics 
ISSN: 0021-8979
EISSN: 1089-7550
DOI: 10.1063/1.3592636
Rights: © 2011 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 D. Zhou et al., J. Appl. Phys. 109, 114104 (2011) and may be found at http://link.aip.org/link/?jap/109/114104.
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