Bi/Sb distribution and its consequences in solid solution members of the thermoelectric materials K2Bi8-xSbxSe13

Theodora Kyratsi, Duck Young Chung, Mercouri G. Kanatzidis*

*Corresponding author for this work

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

In an effort to understand the nature of mass fluctuations introduced when β-K2Bi8Se13 is alloyed with K2Sb8Se13 we determined the detailed crystal structures of two solid solutions of the type K2Bi8-xSbxSe13 with x=4.0 and x=2.4. The structure is that of β-K2Bi8Se13 which is a promising thermoelectric material with low thermal conductivity. The single crystal structures of K1.49Bi4.72Sb3.79Se13 and K1.49Bi5.55Sb2.97Se13 were determined and the Bi/Sb distribution in the structures was examined.

Original languageEnglish (US)
Pages (from-to)36-42
Number of pages7
JournalJournal of Alloys and Compounds
Volume338
Issue number1-2 SPEC.
DOIs
StatePublished - May 16 2002

Keywords

  • Crystal structure
  • Thermoelectrics
  • X-ray diffraction

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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