Abstract
High-quality Bi2Te3 microcrystals have been grown by physical vapor transport (PVT) method without using a foreign transport agent. The microcrystals grown under optimal temperature gradient are well facetted and they have dimensions up to ∼100μm. The phase composition of grown crystals has been identified by X-ray single crystal structure analysis in space group R3̄m, a=4.3896(2)Å, b=30.5019(10)Å, Z=3 (R=0.0271). Raman microspectrometry has been used to describe the vibration parameters of Bi2Te3 microcrystals. The FWHM parameters obtained for representative Raman lines at 61cm−1 and 101cm−1 are as low as 3.5cm−1 and 4.5cm−1, respectively.
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