Lanthanum-substituted bismuth titanate nanotubes
| Autor: | Jun Mo Yang, Ulugbek Shaislamov, Beelyong Yang |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Nanotube
Fabrication Materials science business.industry Bismuth titanate Doping Nanowire Nanotechnology Condensed Matter Physics Ferroelectricity Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Transmission electron microscopy Barium titanate Optoelectronics business |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 44:1649-1652 |
| ISSN: | 1386-9477 |
| Popis: | Ferroelectric (Bi1−xLax)4Ti3O12 (BLT) nanotubes doped with 0.85 at% La were fabricated with the aim of developing an alternative to conventional technologies. A technique based on the wetting of a polymeric metal-organic source was used in the fabrication process for ferroelectric nanotubes. This technique involved the use of porous alumina produced by anodic aluminum oxidation as a template. It was demonstrated that these nanotubes can be used for the large-scale fabrication. X-ray diffraction measurements and transmission electron microscopy studies show that the crystal grains in the BLT nanotubes with a wall thickness of approximately 20 nm have a ferroelectric BLT phase with a random orientation and a grain diameter of 10 nm to 60 nm. Promising electrical properties of the BLT nanotubes for electronic devices could be confirmed in I–V measurements. The measured leakage current for a BLT nanotube with a length of approximately 2.5 μm at an applied voltage of 2 V was approximately 2.5×10–11 A. |
| Databáze: | OpenAIRE |
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