کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1592956 | 1002680 | 2012 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Structural and vibrational properties of PVT grown Bi2Te3 microcrystals Structural and vibrational properties of PVT grown Bi2Te3 microcrystals](/preview/png/1592956.png)
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 ∼100 μm. 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 61 cm−1 and 101 cm−1 are as low as 3.5 cm−1 and 4.5 cm−1, respectively.
► Growth of Bi2Te3 microcrystals by PVT method from self-vapor.
► X-ray single crystal structure analysis of Bi2Te3 (R=0.0271).
► Raman microspectrometry of Bi2Te3 microcrystals.
Journal: Solid State Communications - Volume 152, Issue 13, July 2012, Pages 1119–1122