Singh, Anar ; Patel, Jay Prakash ; Pandey, Dhananjai (2009) High temperature ferroic phase transitions and evidence of paraelectric cubic phase in the multiferroic 0.8BiFeO3-0.2BaTiO3 Applied Physics Letters, 95 (14). 142909_1-142909_3. ISSN 0003-6951
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Official URL: http://apl.aip.org/resource/1/applab/v95/i14/p1429...
Related URL: http://dx.doi.org/10.1063/1.3242419
Abstract
We present here results of a powder x-ray diffraction study on the multiferroic 0.8BiFeO3-0.2BaTiO3 in the temperature range of 300-925 K. Our results provide unambiguous evidence for paraelectric cubic phase. We do not find any evidence for intermediate ß-phase in our studies. The rhombohedral to cubic phase transition is shown to be of first order as revealed by the coexistence of cubic and rhombohedral phases over 100 K range and a discontinuous change in the unit cell volume. An anomaly in the unit cell volume at the magnetic transition temperature indicative of the magnetoelastic coupling is also reported.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| ID Code: | 27253 |
| Deposited On: | 10 Dec 2010 12:53 |
| Last Modified: | 05 Mar 2011 09:20 |
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