Synthesis and Properties of Ce3+ Doped Barium Titanate Nanotube Thin Films
ZHU Lu1, YIN Peiyang1, DENG Xiangyun1,2, LI Jianbao1,3, ZHANG Wei1, JIN Hong1
1 State Key Laboratory of Marine Resources Utilization of the South China Sea, Materials and Chemical Engineering Institute, Hainan University, Haikou 570228; 2 College of Physics and Electronic Information, Tianjin Normal University, Tianjin 300387; 3 Department of Materials Science and Engineering, Tsinghua University, Beijing 100084
Abstract: Ba1-xCexTiO3(0≤x≤0.08) nanotube thin films were prepared via hydrothermal method, anodized TiO2 nanotube thin films as template. The structure, morphology and electrical properties of Ba1-xCexTiO3 nanotube thin films were investigated. The crystal structure was characterized by X-ray diffraction, the surface and fracture morphology was observed by scanning electron microscopy and transmission electron microscopy, and the dielectric properties were tested by broadband dielectric spectrometer. The result revealed that the Ba1-xCexTiO3 nanotube thin films diameter was between 80—95 nm with cubic phase which were prepared by hydrothermal method under mild conditions. The polycrystalline Ba1-xCexTiO3 nanotube thin film was formed after annealing, and the outer diameter of the tube was between 90—100 nm and the thickness of the tube wall was 25—30 nm, the dielectric constant of thin film in 1 kHz was 472, the dielectric loss was 0.41.
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