Structural, chemical, and transport properties of a new clathrate compound: Cs8Zn4Sn42

G. S. Nolas, T. J R Weakley, Joshua Cohn

Research output: Contribution to journalArticle

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Abstract

The synthesis and structural, chemical, and transport properties of a new clathrate compound with elemental composition Cs8Zn4Sn42 is reported. This compound is cubic with space group Pm3̄n and a lattice parameter of 12.1226(19) Å. Single-crystal X-ray diffraction and structural refinement indicate that Cs atoms reside in the polyhedral cavities formed by the tetrahedrally bonded network of Zn and Sn atoms. The Cs atom in the larger polyhedra (tetrakaidecahedra) exhibit greater and more anisotropic thermal motion than those of the smaller polyhedra (dodecahedra). This "rattling" of the Cs contributes to the low thermal conductivity of this compound, obtained on a polycrystalline pellet. In addition, Zn is ordered in this compound. Electronic properties and the potential of this type of Sn-clathrate for thermoelectric applications are also discussed.

Original languageEnglish (US)
Pages (from-to)2470-2473
Number of pages4
JournalChemistry of Materials
Volume11
Issue number9
StatePublished - 1999
Externally publishedYes

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Transport properties
Chemical properties
Structural properties
Atoms
Electronic properties
Lattice constants
Thermal conductivity
Single crystals
X ray diffraction
Chemical analysis
Hot Temperature

ASJC Scopus subject areas

  • Materials Chemistry
  • Materials Science(all)

Cite this

Structural, chemical, and transport properties of a new clathrate compound : Cs8Zn4Sn42. / Nolas, G. S.; Weakley, T. J R; Cohn, Joshua.

In: Chemistry of Materials, Vol. 11, No. 9, 1999, p. 2470-2473.

Research output: Contribution to journalArticle

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