Structural refinement and thermal expansion of hexaborides

Chun-Hua Chen, Takashi Aizawa, Nobuo Iyi, Akira Sato, Shigeki Otani*

*Corresponding author for this work

Research output: Contribution to journalLetter

62 Scopus citations

Abstract

In the boron-framework of hexaborides, CaB6, SrB6, BaB6, YB6 and LaB6, the boron position was found to be adjusted so as to compensate the interaction between the cations. It was estimated from the boron position that a boron-boron bond between the boron octahedra has a 1.5 times higher force constant than that in the octahedron, which is consistent with the results of the neutron and Raman scattering experiments. In addition, the adjustment of the boron position well corresponded with the thermal expansion.

Original languageEnglish
JournalJournal of Alloys and Compounds
Volume366
Issue number1-2
DOIs
StatePublished - 10 Mar 2004

Keywords

  • Hexaborides
  • Thermal expansion
  • X-ray diffraction

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