Polymorphism and Superstructure in BaCoS2−δ

• Published in: Journal of solid state chemistry Vol. 127; no. 2; pp. 211 - 221
• Main Authors: Gelabert, M.C., Brese, N.E., DiSalvo, F.J., Jobic, S., Deniard, P., Brec, R.
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 01.12.1996; Elsevier
• Subjects: Condensed matter: structure, mechanical and thermal properties; Crystalline state (including molecular motions in solids); Crystallographic aspects of phase transformations; pressure effects; Exact sciences and technology; Halides, chalcogenides and analogous compounds of group vb; Inorganic compounds; Physics; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Temperature dependence; Inorganic compounds; Phase transformations; Electron diffraction; Ternary compounds; Transition element compounds; Cobalt sulfides; XRD; Experimental study; Nonstoichiometry; Magnetic susceptibility; Barium sulfides; Superstructure; Polymorphism; Crystal structure

BaCoS2−δconsists of at least three different polymorphs: two that are stoichiometric and one that is potentially sulfur deficient with 0.0 ≤ δ ≤ 0.2. Two of these polymorphs were investigated here: a tetragonal single crystalP4/nmm,a= 4.568(1) Å,c= 8.942(2) Å (δ ≈ 0), and polycrystalline powderCmma,...