Structural and vibrational properties of PVT grown Bi2Te3 microcrystals |
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| Authors: | VV Atuchin TA Gavrilova KA Kokh NV Kuratieva NV Pervukhina NV Surovtsev |
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| Institution: | 1. Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk 90, 630090, Russia;2. Laboratory of Nanodiagnostics and Nanolithography, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russia;3. Laboratory of Crystal Growth, Institute of Geology and Mineralogy, SB RAS, Novosibirsk 630090, Russia;4. Laboratory of Crystal Chemistry, Institute of Inorganic Chemistry, SB RAS, Novosibirsk 630090, Russia;5. Laboratory of Condensed Matter Spectroscopy, Institute of Automation and Electrometry, SB RAS, Novosibirsk 90, 630090, Russia;1. School of Mechanical Engineering, Jiangsu University, Key Laboratory of Tribology of Jiangsu Province, Zhenjiang 212013, Jiangsu Province, China;2. School of Mechanical Engineering, Jiangsu University of Technology, Changzhou 213001, Jiangsu Province, China;3. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China;4. Department of Chemical Engineering, Zhenjiang College, Zhenjiang 212003, Jiangsu Province, China;1. Univ Lille Nord de France, Lille F-59000, France;2. ULCO, LPCA, EAC CNRS 4493, Dunkerque F-59140, France;3. St. Petersburg University, St. Petersburg 199034, Russia;1. Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan;2. Graduate School of Science and Technology, Niigata University, Niigata 910-2181, Japan;3. Graduate School of Science and Engineering, Ibaraki University, Mito, Ibaraki 310-8512, Japan |
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| 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 ～100 μm. The phase composition of grown crystals has been identified by X-ray single crystal structure analysis in space group R3?m, 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. |
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