Annealing effect on the structural and dielectric properties of hematite nanoparticles
Abstract
In the present work, we have synthesized hematite (α-Fe2O3) nanoparticles by sol-gel method and sintered them at different temperatures (200 °C, 400 °C and 800 °C for six hours). The samples were then characterized using versatile characterization techniques such as X-ray diffraction (XRD), dielectric measurement and temperature dependent resistivity (RT) for their structural, dielectric and electrical properties. XRD measurements infer that intensity of peak increases with an increase in temperature resulting an increase in crystallite size. Temperature dependent resistivity also shows decrease in the resistivity of the samples. Furthermore, the dielectric measurements correspond to the increase in the dielectric constant. Based on these observations, it can be inferred that sintering temperature plays an important role in tailoring the various physical properties of hematite nanoparticles.
- Publication:
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2nd International Conference on Condensed Matter and Applied Physics (ICC 2017)
- Pub Date:
- May 2018
- DOI:
- 10.1063/1.5032580
- Bibcode:
- 2018AIPC.1953c0245K