Structure and phase stability of binary zintl-phase compounds

Lithium-group 13 intermetallics and metal-doped group 14 clathrate compounds

Alyssa Ker, Evgeny Todorov, Roger Rousseau, Kentaro Uehara, François Xavier Lannuzel, John S. Tse

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The structure/bonding relationship in a series of intermetallic phases of Li with Al, Ga, and In was investigated by density functional theory and complemented by a model based on tight-binding theory and the method of moments. The combination of these two approaches provides a simple scheme which allows for both a comprehensive understanding of structural trends and the ability to predict low-/energy structures for a given composition. This analysis gives a straightforward picture of phase stability in terms of local geometric features such as triangular, square, and hexagonal arrangements of atoms. The approach was extended to examine the structural properties of metal-doped clathrate compounds of C, Si, Ge, and Sn. Clathrate-type phases based on the frameworks Si172, Ge172, Si40, and Ge40 are not only likely to be energetically favorable but may also exhibit high thermoelectric efficiency.

Original languageEnglish
Pages (from-to)2787-2798
Number of pages12
JournalChemistry - A European Journal
Volume8
Issue number12
DOIs
Publication statusPublished - Jun 17 2002

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Lithium Compounds
Lithium compounds
Phase stability
Method of moments
Intermetallics
Density functional theory
Structural properties
Metals
Atoms
Chemical analysis

Keywords

  • Density functional calculations
  • Inclusion compounds
  • Intermetallic phases
  • Solid-state structures
  • Zintl phases

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Structure and phase stability of binary zintl-phase compounds : Lithium-group 13 intermetallics and metal-doped group 14 clathrate compounds. / Ker, Alyssa; Todorov, Evgeny; Rousseau, Roger; Uehara, Kentaro; Lannuzel, François Xavier; Tse, John S.

In: Chemistry - A European Journal, Vol. 8, No. 12, 17.06.2002, p. 2787-2798.

Research output: Contribution to journalArticle

Ker, Alyssa ; Todorov, Evgeny ; Rousseau, Roger ; Uehara, Kentaro ; Lannuzel, François Xavier ; Tse, John S. / Structure and phase stability of binary zintl-phase compounds : Lithium-group 13 intermetallics and metal-doped group 14 clathrate compounds. In: Chemistry - A European Journal. 2002 ; Vol. 8, No. 12. pp. 2787-2798.
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