Abstract
Single crystal X-ray and synchrotron X-ray powder diffraction have been used to probe the structure of Ba3NaIr2O9 from 300 K down to 20 K. Ba3NaIr2O9 is found to undergo a structural transition from hexagonal symmetry, P63/mmc, at ambient temperature to monoclinic symmetry, C2/c, at low temperature. The evolution of the unit cell volume upon cooling is indicative of a higher order structural transition, and the symmetry breaking becomes apparent as the temperature is decreased. The low temperature monoclinic structure of Ba3NaIr2O9 contains strongly distorted [NaO6] and [IrO6] octahedra in comparison to the room temperature hexagonal structure.
| Original language | English |
|---|---|
| Pages (from-to) | 608-613 |
| Number of pages | 6 |
| Journal | Solid State Sciences |
| Volume | 11 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2009 Mar 1 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
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Low temperature structural phase transition of Ba3NaIr2O9. / zur Loye, Hans Conrad; Kim, Seung Joo; Macquart, Rene; Smith, Mark D.; Lee, Yongjae; Vogt, Tom.
In: Solid State Sciences, Vol. 11, No. 3, 01.03.2009, p. 608-613.Research output: Contribution to journal › Article
TY - JOUR
T1 - Low temperature structural phase transition of Ba3NaIr2O9
AU - zur Loye, Hans Conrad
AU - Kim, Seung Joo
AU - Macquart, Rene
AU - Smith, Mark D.
AU - Lee, Yongjae
AU - Vogt, Tom
PY - 2009/3/1
Y1 - 2009/3/1
N2 - Single crystal X-ray and synchrotron X-ray powder diffraction have been used to probe the structure of Ba3NaIr2O9 from 300 K down to 20 K. Ba3NaIr2O9 is found to undergo a structural transition from hexagonal symmetry, P63/mmc, at ambient temperature to monoclinic symmetry, C2/c, at low temperature. The evolution of the unit cell volume upon cooling is indicative of a higher order structural transition, and the symmetry breaking becomes apparent as the temperature is decreased. The low temperature monoclinic structure of Ba3NaIr2O9 contains strongly distorted [NaO6] and [IrO6] octahedra in comparison to the room temperature hexagonal structure.
AB - Single crystal X-ray and synchrotron X-ray powder diffraction have been used to probe the structure of Ba3NaIr2O9 from 300 K down to 20 K. Ba3NaIr2O9 is found to undergo a structural transition from hexagonal symmetry, P63/mmc, at ambient temperature to monoclinic symmetry, C2/c, at low temperature. The evolution of the unit cell volume upon cooling is indicative of a higher order structural transition, and the symmetry breaking becomes apparent as the temperature is decreased. The low temperature monoclinic structure of Ba3NaIr2O9 contains strongly distorted [NaO6] and [IrO6] octahedra in comparison to the room temperature hexagonal structure.
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U2 - 10.1016/j.solidstatesciences.2008.12.010
DO - 10.1016/j.solidstatesciences.2008.12.010
M3 - Article
AN - SCOPUS:60549098598
VL - 11
SP - 608
EP - 613
JO - Solid State Sciences
JF - Solid State Sciences
SN - 1293-2558
IS - 3
ER -