Synthesis of Crystalline β-FeSi2 Under High-Temperature and High-Pressure
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.
Document Type: Research Article
Publication date: 2011-12-01
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