Abstract
We have observed etch pits of p-type β-FeSi2 single crystals grown by the temperature gradient solution growth method. Characteristic etch pits which depend on the surface orientation of the crystals were observed on the surface etched by diluted hydrofluoric acid and HF:HNO3:H2O=1:2:2–8 solutions. These etchants are suitable for the observation of etch pits and surface orientation of β-FeSi2 single crystals.
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