Synthesis and characterization of Er3SmQ6 (Q=S, Se) and Er1.12Sm0.88Se3

Danielle L. Gray, Brandon A. Rodriguez, George H. Chan, Richard P. Van Duyne, James A. Ibers

Research output: Contribution to journalArticlepeer-review

Abstract

The interlanthanide compounds Er3SmS6, Er3SmSe6, and Er1.12Sm0.88Se3 have been synthesized from stoichiometric reactions of the elements in a KI salt flux at 1273, 1173, and 1123 K, respectively. Er3SmS6 and Er3SmSe6, which are isostructural and ordered, crystallize in space group P21/m in the ScEr3S6 structure type whereas Er1.12Sm0.88Se3, in which the Er and Sm atoms are disordered, crystallizes in space group Pnma in the U2S3 structure type. Er3SmS6 is a paramagnet with a μeff=11.25(1) μB/mol. From optical measurements a direct band gap of 2.0 eV for light perpendicular to the (100) crystal face of Er3SmSe6 is derived whereas for isostructural Er3SmS6 an optical transition at 2.2-2.4 eV and a broad absorption peak at lower energies are observed.

Original languageEnglish (US)
Pages (from-to)1527-1532
Number of pages6
JournalJournal of Solid State Chemistry
Volume180
Issue number5
DOIs
StatePublished - May 2007
Externally publishedYes

Keywords

  • Crystal structure
  • Interlanthanide chalcogenides
  • Magnetism
  • Optical transitions
  • Syntheses

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Synthesis and characterization of Er<sub>3</sub>SmQ<sub>6</sub> (Q=S, Se) and Er<sub>1.12</sub>Sm<sub>0.88</sub>Se<sub>3</sub>'. Together they form a unique fingerprint.

Cite this