Syntheses, structure, and magnetic properties of several LnYbQ3 chalcogenides, Q=S, Se

Kwasi Mitchell, Rebecca C. Somers, Fu Qiang Huang, James A. Ibers*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

The six LnYbQ3 compounds β-LaYbS3, LaYbSe 3, CeYbSe3, PrYbSe3, NdYbSe3, and SmYbSe3 have been synthesized from high-temperature solid-state reactions of the constituent elements at 1223K. The compounds are isostructural to UFeS3 and crystallize in the space group Cmcm of the orthorhombic system with four formula units in a cell. Cell constants (Å) at 153K are: β-LaYbS3, 3.9238(8), 12.632(3), 9.514(2); LaYbSe3, 4.0616(8), 13.094(3), 9.932(2); CeYbSe3, 4.0234(5), 13.065(2), 9.885(1); PrYbSe3, 4.0152(5), 13.053(2), 9.868(1); NdYbSe 3, 4.0015(6), 13.047(2), 9.859(1); SmYbSe3, 3.9780(9), 13.040(3), 9.860(2). The structure is composed of layers of YbQ6 (Q= S or Se) octahedra that alternate with layers of LnQ8 bicapped trigonal prisms along the b-axis. Because there are no Q-Q bonds in the structure the formal oxidation states of Ln/Yb/Q are 3+/3+/2-. Magnetic susceptibility measurements indicate that CeYbSe3 and SmYbSe 3 are Curie-Weiss paramagnets over the temperature range 5-300K.

Original languageEnglish (US)
Pages (from-to)709-713
Number of pages5
JournalJournal of Solid State Chemistry
Volume177
Issue number3
DOIs
StatePublished - Mar 1 2004

Keywords

  • Chalcogenide
  • Crystal structure
  • Magnetic properties
  • Rare-earth element
  • Solid-state compound
  • Synthesis

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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