Crystal structures and phase transitions in Ba2HoTaO6

Brendan J. Kennedy, Paul J. Saines, Yoshiki Kubota, Chiharu Minakata, Hiroko Hano, Kenichi Kato, Masaki Takata

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

The structure of the cation-ordered double perovskite Ba2HoTaO6 was examined using synchrotron X-ray powder diffraction at fine temperature intervals over the range of 90-300 K. Ba2HoTaO6 has a cubic structure in space group F m over(3, ̄) m at room temperature. A proper ferroelastic phase transition to I4/m tetragonal symmetry occurs near approximately 260 K. Analysis of the spontaneous tetragonal strain versus temperature indicated that the phase transition is second order in nature.

Original languageEnglish
Pages (from-to)1875-1880
Number of pages6
JournalMaterials Research Bulletin
Volume42
Issue number11
DOIs
Publication statusPublished - 2007 Nov 6
Externally publishedYes

Keywords

  • A. Oxide
  • C. X-ray diffraction
  • D. Crystal structure
  • D. Phase transitions

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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