skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Structural, chemical and transport properties of a new clathrate compound: Cs{sub 8}Zn{sub 4}Sn{sub 42}

Abstract

The synthesis and structural, chemical, and transport properties of a new clathrate compound with elemental composition Cs{sub 8}Zn{sub 4}Sn{sub 42} is reported. This compound is cubic with space group Pm{bar 3}n and a lattice parameter of 12.1226(10) {angstrom}. 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.

Authors:
; ;
Publication Date:
Research Org.:
Marlow Industries, Inc., Dallas, TX (US)
OSTI Identifier:
20001170
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 11; Journal Issue: 9; Other Information: PBD: Sep 1999; Journal ID: ISSN 0897-4756
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 40 CHEMISTRY; CLATHRATES; ZINC ALLOYS; TIN BASE ALLOYS; CESIUM ALLOYS; CRYSTAL STRUCTURE; CHEMICAL PROPERTIES; THERMAL CONDUCTIVITY

Citation Formats

Nolas, G.S., Weakley, T.J.R., and Cohn, J.L. Structural, chemical and transport properties of a new clathrate compound: Cs{sub 8}Zn{sub 4}Sn{sub 42}. United States: N. p., 1999. Web. doi:10.1021/cm990164i.
Nolas, G.S., Weakley, T.J.R., & Cohn, J.L. Structural, chemical and transport properties of a new clathrate compound: Cs{sub 8}Zn{sub 4}Sn{sub 42}. United States. doi:10.1021/cm990164i.
Nolas, G.S., Weakley, T.J.R., and Cohn, J.L. Wed . "Structural, chemical and transport properties of a new clathrate compound: Cs{sub 8}Zn{sub 4}Sn{sub 42}". United States. doi:10.1021/cm990164i.
@article{osti_20001170,
title = {Structural, chemical and transport properties of a new clathrate compound: Cs{sub 8}Zn{sub 4}Sn{sub 42}},
author = {Nolas, G.S. and Weakley, T.J.R. and Cohn, J.L.},
abstractNote = {The synthesis and structural, chemical, and transport properties of a new clathrate compound with elemental composition Cs{sub 8}Zn{sub 4}Sn{sub 42} is reported. This compound is cubic with space group Pm{bar 3}n and a lattice parameter of 12.1226(10) {angstrom}. 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.},
doi = {10.1021/cm990164i},
journal = {Chemistry of Materials},
issn = {0897-4756},
number = 9,
volume = 11,
place = {United States},
year = {1999},
month = {9}
}