Synthesis and characterization of highly-ordered barium-strontium titanate nanotube arrays fabricated by sol—gel method

doi:10.1088/1674-1056/18/9/051

中国物理B ›› 2009, Vol. 18 ›› Issue (9): 3922-3927.doi: 10.1088/1674-1056/18/9/051

Synthesis and characterization of highly-ordered barium-strontium titanate nanotube arrays fabricated by sol—gel method

程伟¹, 郭峰¹, 李美亚¹, 陈煜², 刘威², 赵兴中²

(1)Department of Physics, Wuhan University, Wuhan 430072, China; (2)Department of Physics, Wuhan University, Wuhan 430072, China;Nanoscience and Nanotechnology Center, Wuhan University, Wuhan 430072, China

收稿日期:2009-03-03 修回日期:2009-04-21 出版日期:2009-09-20 发布日期:2009-09-20
基金资助:
Project is supported by the National Natural Science Foundation of China (Grant No 60244003).

Synthesis and characterization of highly-ordered barium-strontium titanate nanotube arrays fabricated by sol—gel method

Chen Yu(陈煜)^a)b), Chen Wei(程伟)^a), Guo Feng(郭峰)^a), Li Mei-Ya(李美亚)^a), Liu Wei(刘威)^a)b)†, and Zhao Xing-Zhong(赵兴中)^a)b)‡

^a Department of Physics, Wuhan University, Wuhan 430072, China; ^b Nanoscience and Nanotechnology Center, Wuhan University, Wuhan 430072, China

Received:2009-03-03 Revised:2009-04-21 Online:2009-09-20 Published:2009-09-20
Supported by:
Project is supported by the National Natural Science Foundation of China (Grant No 60244003).

摘要/Abstract

摘要： Highly uniformed barium-strontium titanate nanotube arrays were fabricated using a porous anodic aluminum oxide template from a barium-strontium titanate sol--gel solution. Electron microscope results showed that nanotubes with uniform length and diameter were obtained. The diameters and lengths of these nanotubes were dependent on the pore diameter and the thickness of the applied anodic aluminum oxide template. High resolution transmission electron microscopy and the selected-area electron diffraction pattern investigations demonstrated the perovskite structure and the polycrystalline of the fabricated barium-strontium titanate nanotubes. The characterization of the electrical and dielectric properties had also been made. Compared to thin film material, the intrinsic leakage current density is almost the same. Besides, at 30~℃, the dielectric constant and dielectric loss of the fabricated nanotube is 80 and 0.027 at 1~MHz respectively.

Abstract: Highly uniformed barium-strontium titanate nanotube arrays were fabricated using a porous anodic aluminum oxide template from a barium-strontium titanate sol--gel solution. Electron microscope results showed that nanotubes with uniform length and diameter were obtained. The diameters and lengths of these nanotubes were dependent on the pore diameter and the thickness of the applied anodic aluminum oxide template. High resolution transmission electron microscopy and the selected-area electron diffraction pattern investigations demonstrated the perovskite structure and the polycrystalline of the fabricated barium-strontium titanate nanotubes. The characterization of the electrical and dielectric properties had also been made. Compared to thin film material, the intrinsic leakage current density is almost the same. Besides, at 30 ℃, the dielectric constant and dielectric loss of the fabricated nanotube is 80 and 0.027 at 1 MHz respectively.

Key words: nanotubes, barium-strontium titanate, sol--gel

中图分类号: (Nanotubes)

81.07.De

73.63.Fg (Nanotubes) 77.22.Ch (Permittivity (dielectric function)) 77.22.Gm (Dielectric loss and relaxation) 81.16.-c (Methods of micro- and nanofabrication and processing) 81.20.Fw (Sol-gel processing, precipitation)

陈煜, 程伟, 郭峰, 李美亚, 刘威, 赵兴中. Synthesis and characterization of highly-ordered barium-strontium titanate nanotube arrays fabricated by sol—gel method[J]. 中国物理B, 2009, 18(9): 3922-3927.

Chen Yu(陈煜), Chen Wei(程伟), Guo Feng(郭峰), Li Mei-Ya(李美亚), Liu Wei(刘威), and Zhao Xing-Zhong(赵兴中). Synthesis and characterization of highly-ordered barium-strontium titanate nanotube arrays fabricated by sol—gel method[J]. Chin. Phys. B, 2009, 18(9): 3922-3927.

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Synthesis and characterization of highly-ordered barium-strontium titanate nanotube arrays fabricated by sol—gel method

Synthesis and characterization of highly-ordered barium-strontium titanate nanotube arrays fabricated by sol—gel method

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