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Title: Synthesis, characterization and ferroelectric properties of lead-free K₀.₅Na₀.₅NbO₃nanotube arrays
Authors: Zhou, Di
Gu, Haoshuang
Hu, Yongming
Tian, Huyong
Wang, Zhao
Qian, Zheli
Wang, Yu
Subjects: Dielectric hysteresis
Dielectric polarisation
Ferroelectric materials
Potassium compounds
Sodium compounds
Sol-gel processing
Issue Date: 1-Jun-2011
Publisher: American Institute of Physics
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.
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
Type: Journal/Magazine Article
DOI: 10.1063/1.3592636
ISSN: 0021-8979 (print)
1089-7550 (online)
Appears in Collections:AP Journal/Magazine Articles

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