HYDROTHERMAL SYNTHESIS OF THIN FILMS OF BARIUM TITANATE NANOTUBE ARRAYS

XIAOHUI WANG State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

LIANGLIANG CHEN State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

JIANLING ZHAO State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

LEI JIN State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

LONGTU LI State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

ABSTRACT

Recently, there has been great demand for patterned perovskite Barium titanate (BT, BaTiO₃) in electroceramic device applications. Well ordered BaTiO₃ nanotube arrays could be fabricated on the anodized Ti substrates at the hydrothermal condition of 200°C 0.05 M Ba(OH)₂, and 2 hr ∼ 7 hr. XRD patterns of as-prepared BaTiO₃ nanotube arrays reveal a perovskite structure. Meanwhile, piezoresponse measurements confirm the existence of ferroelectricity of the BaTiO₃ nanotube arrays. Moreover, SAED result indicates the high-oriented nature of a single BaTiO₃ nanotube.

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ACKNOWLEDGMENT

This work was supported by the High Technology Research and Development Project, China under Grant No. 863–2001AA325010 and the Ministry of Sciences and Technology of China through 973-Project under Grant No. 2002CB613301.

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HYDROTHERMAL SYNTHESIS OF THIN FILMS OF BARIUM TITANATE NANOTUBE ARRAYS

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HYDROTHERMAL SYNTHESIS OF THIN FILMS OF BARIUM TITANATE NANOTUBE ARRAYS

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