Formation and growth mechanisms of ion-induced iron-carbon nanocomposites at room temperature |
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Authors: | Zhipeng Wang Mohd Zamri Mohd Yusop Takehiko Hihara Akari Hayashi Yasuhiko Hayashi Masaki Tanemura |
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Affiliation: | Department of Frontier Materials, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan |
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Abstract: | The irradiation of graphite surfaces with a simultaneous Fe supply have resulted into the development of various types of carbon nanocomposites. Their morphologies - diameter, density, length and apex angle strongly depend on the ratios of Fe deposition rate (DFe) to ion sputtering rate (Sion). By optimizing the ratio of DFe/Sion (2.40%), the denser and well-aligned Fe-carbon nanocomposite fibers (Fe-CNFs) could be obtained, whose average length and diameter were 0.95 μm and 17 nm, respectively. As confirmed by energy-dispersive X-ray analysis, the Fe-CNFs with amorphous-like or fine-polycrystalline phase were surely composed of carbon and Fe. Two types of growth models have been employed to explain the formation of metal-carbon nanocomposites. |
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Keywords: | Iron-carbon nanocomposites Ion irradiation Growth mechanism |
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