Crystal structures and phase transitions in Ba2HoTaO6

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

doi:10.1016/j.materresbull.2007.07.027

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 journal › Article › peer-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 language	English
Pages (from-to)	1875-1880
Number of pages	6
Journal	Materials Research Bulletin
Volume	42
Issue number	11
DOIs	https://doi.org/10.1016/j.materresbull.2007.07.027
Publication status	Published - 2007 Nov 6
Externally published	Yes

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

Access to Document

10.1016/j.materresbull.2007.07.027

Cite this

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title = "Crystal structures and phase transitions in Ba2HoTaO6",

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.",

keywords = "A. Oxide, C. X-ray diffraction, D. Crystal structure, D. Phase transitions",

author = "Kennedy, {Brendan J.} and Saines, {Paul J.} and Yoshiki Kubota and Chiharu Minakata and Hiroko Hano and Kenichi Kato and Masaki Takata",

note = "Funding Information: This work has been partially supported by the Australian Research Council and the Australian Institute of Nuclear Science and Engineering (AINSE) through the provision of an AINSE Postgraduate Award. The synchrotron radiation experiments were performed at the BL02B2 in the SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No. 2007A1875).",

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T1 - Crystal structures and phase transitions in Ba2HoTaO6

AU - Kennedy, Brendan J.

AU - Saines, Paul J.

AU - Kubota, Yoshiki

AU - Minakata, Chiharu

AU - Hano, Hiroko

AU - Kato, Kenichi

AU - Takata, Masaki

N1 - Funding Information: This work has been partially supported by the Australian Research Council and the Australian Institute of Nuclear Science and Engineering (AINSE) through the provision of an AINSE Postgraduate Award. The synchrotron radiation experiments were performed at the BL02B2 in the SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No. 2007A1875).

PY - 2007/11/6

Y1 - 2007/11/6

N2 - 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.

AB - 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.

KW - A. Oxide

KW - C. X-ray diffraction

KW - D. Crystal structure

KW - D. Phase transitions

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