Mangalam, R. V. K. ; Narayana, C. ; Sundaresan, A. (2009) Pressure-dependent phase transition in the ordered BaBi0.7Nb0.3O3 perovskite High Pressure Research, 29 (2). pp. 272-277. ISSN 0895-7959
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Official URL: https://www.tandfonline.com/doi/abs/10.1080/089579...
Related URL: http://dx.doi.org/10.1080/08957950902941022
Abstract
BaBi0.7Nb0.3O3, an ordered perovskite, crystallizes in a centrosymmetric rhombohedral structure with the space group R3¯. The refined cell parameters obtained from synchrotron powder X-ray diffraction data for the rhombohedral phase at ambient pressure are a = 6.109 (2) Å and α = 60.3 (1)°. The pressure-dependent synchrotron powder X-ray diffraction studies show a phase transition around 8.44 ± 1 GPa, where it transforms from rhombohedral structure to a monoclinic structure. The lattice parameters obtained for the monoclinic phase at a pressure of 15 ± 1 GPa are a = 5.91 (2) Å, b = 6.25 (3) Å and c = 8.22 (1) Å with monoclinic angle, β = 88 (1)°.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Taylor and Francis Group. |
| Keywords: | Phase Transition; Synchrotron X-ray Diffraction; Ordered Perovskite |
| ID Code: | 113718 |
| Deposited On: | 23 Apr 2018 10:23 |
| Last Modified: | 23 Apr 2018 10:23 |
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