Effect of pre-annealing temperature on the growth of aligned α-Fe2o3 nanowires via a two-step thermal oxidation
Pre-annealing as part of a two-step thermal oxidation process has a significant effect on the growth of hematite (α-Fe2O3) nanowires on Fe foil. High-density aligned nanowires were obtained on iron foils pre-annealed at 300°C under a dry air flow for 30min. The X-ray diffraction (XRD) patterns indi...
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| Main Authors: | , , |
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| Format: | Article |
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World Scientific Publishing Co. Pte Ltd
2016
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/69295/ http://dx.doi.org/10.1142/S0218625X1650027X |
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| Summary: | Pre-annealing as part of a two-step thermal oxidation process has a significant effect on the growth of hematite (α-Fe2O3) nanowires on Fe foil. High-density aligned nanowires were obtained on iron foils pre-annealed at 300°C under a dry air flow for 30min. The X-ray diffraction (XRD) patterns indicate that the nanowires are transformed from the small α-Fe2O3 grains and uniquely grow in the (110) direction. The formation of a high-density of small grains by pre-annealing improved the alignment and density of the α-Fe2O3 nanowires. |
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