Low temperature fabrication of Al2O3nanostrips and their enhanced dielectric property
| Autor: | M A Shah, F A Dar |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Aluminium oxides
Fabrication Nanostructure Materials science Polymers and Plastics business.industry Band gap Metals and Alloys 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology 01 natural sciences Hydrothermal circulation Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials 0103 physical sciences Optoelectronics Dielectric loss 010306 general physics 0210 nano-technology business |
| Zdroj: | Materials Research Express. 5:015048 |
| ISSN: | 2053-1591 |
| DOI: | 10.1088/2053-1591/aaa607 |
| Popis: | Under ambient conditions, Al2O3 nanostrips were obtained through economical and facile hydrothermal route followed by dehydration process. The average length and width of the rectangular nanostrips were found to be 74 nm and 36 nm, respectively. On account of the significance of hydrothermal preparation route Al2O3 nanostrips with a lower band gap of 4.19 eV were obtained in comparison to counter routes which result in the higher bandgap Al2O3 nanostructures. Owing to the low band gap, the resulting samples show enhanced dielectric constant and a decrease in dielectric loss as the frequency increases than the nanostructures obtained through other routes under such conditions. Furthermore using super-saturation ratio, the detailed fabrication mechanism of Al2O3 nanostrips throughout the hydrothermal process have been incorporated. |
| Databáze: | OpenAIRE |
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