期刊
MATERIALS LETTERS
卷 61, 期 11-12, 页码 2382-2384出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2006.09.018
关键词
crystal structure; intermetallic alloys and compounds; high-pressure synthesis; Rietveld analysis; chalcopyrite
A new copper thioborate, CuBS2, was synthesized at high-pressure/temperature condition of 3 GPa and 700-900 degrees C. The crystal structure was refined by the Rietveld analysis of the powder X-ray diffraction data. The compound crystallizes into a tetragonal unit cell (a=0.5044(1) nm, c=0.8947(2) nm, space group: I-42d), isostructural with CuMS2 chalcopyrite compounds (M: Al, Ga, and In). The compound is the first representative of the chalcopyrite-type family consisting of BS4-tetrahedra. From the UV-Vis diffuse reflectance spectrum, the optical band gap of CuBS2, was estimated to be E-g=3.61 eV. (c) 2006 Elsevier B.V. All rights reserved.
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