Abstract
We have succeeded in growing single-phase β-FeSi2 crystals by a temperature gradient solution growth method. FeSi2 solute and Ga solvent were placed in a quartz ampule, which was evacuated under a high vacuum (<2×10-6 Torr) and sealed with a quartz rod. The ampule was heated for 24–144 h in a gradient temperature profile. The grown crystals had multiple facet planes and the color was metallic silver white. X-ray diffraction showed that the grown crystals were single-phase β-FeSi2. The conduction of the β-FeSi2 grown crystals was p-type and the resistivity was between 0.05 and 0.2 Ω·cm.
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