REAu3Al7 (RE = rare earth)

New ternary aluminides grown from aluminum flux

S. E. Latturner, D. Bilc, J. R. Ireland, C. R. Kannewurf, S. D. Mahanti, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

A series of ternary aluminide intermetallics with a new structure type were formed from the reaction of gold and rare-earth metals in aluminum flux. The REAu3Al7 structure was obtained with all rare earths RE with the exception of La and Eu. These materials crystallize in the rhombohedral space group R-3c, with unit cell parameters a=8.0922(6) Å and c=21.066(2) Å for PrAu3Al7 as an example. The variation in cell edges with rare-earth size is regular with the exception of the Yb analogue. The possible mixed valency indicated by this result was confirmed by magnetic susceptibility measurements. Density functional theory-based band structure calculations on YbAu3Al7 indicate the ytterbium f-orbitals are located just below the Fermi level, further supporting the mixed valence description of this material.

Original languageEnglish
Pages (from-to)48-57
Number of pages10
JournalJournal of Solid State Chemistry
Volume170
Issue number1
DOIs
Publication statusPublished - Jan 2003

Fingerprint

aluminides
Aluminum
Rare earths
Rare Earth Metals
rare earth elements
Ytterbium
Fluxes
aluminum
Fermi level
Magnetic susceptibility
Gold
Band structure
Intermetallics
Density functional theory
ytterbium
cells
intermetallics
analogs
gold
density functional theory

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

REAu3Al7 (RE = rare earth) : New ternary aluminides grown from aluminum flux. / Latturner, S. E.; Bilc, D.; Ireland, J. R.; Kannewurf, C. R.; Mahanti, S. D.; Kanatzidis, Mercouri G.

In: Journal of Solid State Chemistry, Vol. 170, No. 1, 01.2003, p. 48-57.

Research output: Contribution to journalArticle

Latturner, S. E. ; Bilc, D. ; Ireland, J. R. ; Kannewurf, C. R. ; Mahanti, S. D. ; Kanatzidis, Mercouri G. / REAu3Al7 (RE = rare earth) : New ternary aluminides grown from aluminum flux. In: Journal of Solid State Chemistry. 2003 ; Vol. 170, No. 1. pp. 48-57.
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