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Synthesis of Crystalline β-FeSi2 Under High-Temperature and High-Pressure

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Abstract:

In this paper, we report the synthesis of crystalline β-FeSi2 via the reaction of Si and Fe powders under high-temperature and high-pressure. X-ray diffraction and Raman scattering results confirm formation of the β-FeSi2 phase. Scanning electron microscopy, high-resolution transmission electron microscopy, and selected-area electron diffraction patterns show that the β-FeSi2 phase coexists with Si phase with small nanocrystal sizes. The formation of the β-FeSi2 phase is a result of Si diffusion into Fe region. The obtained results suggest that the removal of Si phase can be reached through increasing Fe content and prolonging the duration of high-pressure thermal treatment.

Keywords: BETA-FESI2; CHARACTERIZATION; SYNTHESIS

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2011.4067

Publication date: December 1, 2011

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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