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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on BaTiS3 by Materials Project

BaTiS3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ba2+ is bonded to twelve equivalent S2- atoms to form BaS12 cuboctahedra that share corners with six equivalent BaS12 cuboctahedra, corners with six equivalent TiS6 octahedra, faces with eight equivalent BaS12 cuboctahedra, and faces with six equivalent TiS6 octahedra. The corner-sharing octahedral tilt angles are 19°. There are six shorter (3.41 Å) and six longer (3.53 Å) Ba–S bond lengths. Ti4+ is bonded to six equivalent S2- atoms to form TiS6 octahedra that share corners with six equivalent BaS12 cuboctahedra, faces with six equivalent BaS12 cuboctahedra, and faces with two equivalent TiS6 octahedra. All Ti–S bond lengths are 2.44 Å. S2- is bonded in a 6-coordinate geometry to four equivalent Ba2+ and two equivalent Ti4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2024

Molten flux growth of single crystals of quasi-1D hexagonal chalcogenide BaTiS3

Abstract BaTiS 3 , a quasi-1D complex chalcogenide, has gathered considerable scientific and technological interest due to its giant optical anisotropy and electronic phase transitions. However, the synthesis of high-quality BaTiS 3 crystals, particularly those featuring crystal sizes of millimeters or larger, remains a challenge. Here, we investigate the growth of BaTiS 3 crystals utilizing a molten salt flux of either potassium iodide, or a mixture of barium chloride and barium iodide. The crystals obtained through this method exhibit a substantial increase in volume compared to those synthesized via the chemical vapor transport method, while preserving their intrinsic optical and electronic properties. Our flux growth method provides a promising route toward the production of high-quality, large-scale single crystals of BaTiS 3 , which will greatly facilitate advanced characterizations of BaTiS 3 and its practical applications that require large crystal dimensions. Additionally, our approach offers an alternative synthetic route for other emerging complex chalcogenides. Graphical Abstract

Materials Science↗