Synthesis, Structure, and Properties of A14AlSb11 (A = Ca, Sr, Ba)

Stephanie L. Brock, Laura J. Weston, Marilyn M. Olmstead, Susan M. Kauzlarich

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38 Scopus citations

Abstract

A14AlSb11 (A = Ca, Sr, Ba) is synthesized by reacting the elements in stoichiometric amounts at high temperature (1250°C). Single-crystal X-ray diffraction data (130 K: a = 17.493 (4) Å, c = 23.480 (8) Å (Sr); a = 18.293 (2) Å, c = 24.222 (9) Å (Ba)) were refined (tetragonal, I41/acd (142), Z = 8; R = 4.02%, Rw = 4.26% (Sr); R = 3.71%, Rw = 4.34% (Ba)) and showed these compounds to be isostructural to Ca14AlSb11. Single-crystal X-ray and microprobe data indicate that these compounds are slightly deficient in Al. Temperature-dependent resistivity measurements show that these materials are intrinsic semiconductors with activation energies of 0.0143, 0.0667, and 0.4814 eV for the Ca, Sr, and Ba analogs, respectively.

Original languageEnglish (US)
Pages (from-to)513-523
Number of pages11
JournalJournal of Solid State Chemistry
Volume107
Issue number2
DOIs
StatePublished - Dec 1993

ASJC Scopus subject areas

  • Materials Chemistry
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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