Structure study of single crystal BaTiO3 nanotube arrays produced by the hydrothermal method

被引：68

作者：

Yang, Yang ^{[1
]}

Wang, Xiaohui ^{[1
]}

Sun, Changku ^{[1
]}

Li, Longtu ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 05期

基金：

中国国家自然科学基金;

关键词：

THIN-FILMS; BARIUM-TITANATE; PHOTOLUMINESCENCE; FABRICATION;

D O I：

10.1088/0957-4484/20/5/055709

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High aspect ratio BaTiO3 nanotube arrays with single crystal structure were fabricated by the hydrothermal method at low temperature (150 degrees C). Numerous structure study methods, including x-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), electron paramagnetic resonance (EPR), and x-ray photoelectron spectroscopy (XPS), were used to investigate the structure of single crystal BaTiO3 nanotube arrays. TEM observation shows that BaTiO3 nanotubes have identical crystallographic orientation through their growth directions. EPR and XPS studies show that the obtained BaTiO3 nanotubes contain perceptible oxygen vacancies. Those oxygen vacancies are responsible for the observed green emission band at 545 nm (2.27 eV) detected by photoluminescence study.

引用

页数：5

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