Crystal structures, raman spectroscopy, and magnetic properties of Ba 7.5Al13Si29 and Eu0.27Ba 7.22Al13Si29

Cathie L. Condron, Rhiannon Porter, Ting Guo, Susan M. Kauzlarich

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

The framework-deficient clathrate phases Ba7.5Al 13Si29 and Eu0.27Ba7.22Al 13Si29 were prepared using a molten Al flux. Single-crystal X-ray diffraction confirmed the two phases to be clathrate type I (space group Pm3n). For Eu0.27Ba7.22Al 13Si29, single-crystal X-ray diffraction revealed the Eu to partially occupy the 2a position. Microprobe analysis of single crystals provided the stoichiometry, and Raman spectroscopy was used to investigate the guest framework interactions. The Raman spectra are consistent with both Ba 7.5Al13Si29 and Eu0.27Ba 7.22Al13Si29 having minimal guest-host interactions. Magnetic susceptibility data for Eu0.27Ba 7.22Al13Si29 imply weak magnetic ordering and indicate a 2+ oxidation state for the Eu ion.

Original languageEnglish (US)
Pages (from-to)9185-9191
Number of pages7
JournalInorganic Chemistry
Volume44
Issue number25
DOIs
StatePublished - Dec 12 2005

ASJC Scopus subject areas

  • Inorganic Chemistry

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