Garg, Rohini ; Senyshyn, Anatoliy ; Boysen, Hans ; Ranjan, Rajeev (2008) Structure and phase transition of Na0.5La0.5TiO3 Journal of Physics: Condensed Matter, 20 (50). p. 505215. ISSN 0953-8984
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Official URL: http://doi.org/10.1088/0953-8984/20/50/505215
Related URL: http://dx.doi.org/10.1088/0953-8984/20/50/505215
Abstract
A temperature dependent neutron powder diffraction study was carried out on Na0.5La0.5TiO3 (NLT) from 298K up to 1373K. Rietveld analysis using high resolution x-ray and neutron powder diffraction data confirmed the rhombohedral structure (space group R3¯c) of this compound. The rhombohedral phase transforms to cubic (Pm3¯m) above 873 K. The temperature variation of the tilt angle, a continuous change of the specific volume across the transition, and the strain analysis suggest a second order nature of the cubic–rhombohedral phase transition, which is in conformity with the group theoretical prediction based on symmetry considerations.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Institute of Physics Publishing. |
| ID Code: | 123041 |
| Deposited On: | 02 Sep 2021 11:44 |
| Last Modified: | 02 Sep 2021 11:44 |
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