Refined structure and properties of the layered mott insulator bacos2

G. Jeffrey Snyder, Maria C. Gelabert, F. J. DiSalvo*

*Corresponding author for this work

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

BaCoS2 is orthorhombic Cmma a = 6.4413(3) Å, b = 6.4926(3) Å, c = 8.9406(3) Å, and is closely related to BaNiS2, which contains Ni-S layers separated by rock salt BaS sheets. Crystals were grown from the melt by slow cooling from 1050 to 950°C. The sulfur atoms in the Co-S layers have very anisotropic thermal displacement parameters, possibly indicating that these sulfurs are actually in a double well potential centered at a high symmetry position in the space group Cmma . BaCoS2 is found to be a paramagnetic semiconductor (Mott insulator). The magnetic properties indicate that BaCoS2 undergoes a transformation at 300 K, which is likely due to the onset of antiferromagnetic order.

Original languageEnglish (US)
Pages (from-to)355-361
Number of pages7
JournalJournal of Solid State Chemistry
Volume113
Issue number2
DOIs
StatePublished - Dec 1994

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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