Ln2Al3Si2 (Ln = Ho, Er, Tm): New silicides from molten aluminum - Determination of the Al/Si distribution with neutron crystallography and metamagnetic transitions

Xian Zhong Chen, Bradley Sieve, Robert Henning, Arthur J. Schultz, Paul Brazis, Carl R. Kannewurf, Jerry A. Cowen, Richard Crosby, Mercouri G. Kanatzidis

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Abstract

Highly metallic compounds with a quasi-one-dimensional structure, the new ternary compounds Ln2Al3Si2 (Ln=Ho, Er, Tm) are synthesized in molten aluminum from lanthanoid and silicon as reagents. Their structures show a formally [Al3Si2]6- framework that contains infinite Al zigzag chains and Si-Si dimers and accommodates rows of Ln3+ ions in parallel tunnels. The compounds exhibit metamagnetic transitions at high magnetic fields.

Original languageEnglish
Pages (from-to)693-696
Number of pages4
JournalAngewandte Chemie - International Edition
Volume38
Issue number5
DOIs
Publication statusPublished - Mar 1 1999

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Keywords

  • Aluminum
  • Conducting materials
  • Lanthanides
  • Magnetic properties
  • Silicon

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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