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High Pressure Synthesis of Binary B–S Compounds
Author(s) -
Sasaki T.,
Takizawa H.,
Uheda K.,
Endo T.
Publication year - 2001
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200101)223:1<29::aid-pssb29>3.0.co;2-o
Subject(s) - prism , crystal structure , rietveld refinement , diffraction , lattice (music) , reflectivity , crystallography , band gap , absorption spectroscopy , binary number , absorption (acoustics) , powder diffraction , materials science , chemistry , analytical chemistry (journal) , optics , physics , optoelectronics , mathematics , chromatography , arithmetic , acoustics
Abstract r‐BS was synthesized under high pressure/temperature conditions. Rietveld analysis of the powder X‐ray diffraction data was performed by applying the structure model of GaS 3R (space group: R 3 m ) with the lattice parameters of a hex = 3.05223(7) Å and c hex = 20.4119(5) Å The crystal structure of r‐BS was revealed to be the three‐layer structure comprised of the units built up from B–B pairs which are inside the anti‐prism of S atoms. The measurement of UV‐Vis diffused reflectance spectrum showed that the estimated band gap of r‐BS was about 3.4 eV, and the coloring of r‐BS was observed as broad absorption at 510 nm.