Mangalam, R. V. K. ; Mandal, P. ; Suard, E. ; Sundaresan, A. (2007) Ferroelectricity in Ordered Perovskite BaBi0.53+(Bi0.25+Nb0.35+)O3 with Bi3+:6s2 Lone Pair at the B-site Chemistry of Materials, 19 (17). pp. 4114-4116. ISSN 0897-4756
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Official URL: http://doi.org/10.1021/cm071130a
Related URL: http://dx.doi.org/10.1021/cm071130a
Abstract
The crystal structure of ordered perovskite BaBi0.53+(Bi0.25+Nb0.35+)O 3 was analyzed using electron and neutron diffraction to observe ferroelectricity with high Curie temperature. Analysis of room-temperature neutron diffraction data of BBN showed that the room-temperature structure is rhombohedral with centrosymmetric space group R3̄. Temperature dependence of powder X-ray diffraction showed that there is a structural transition between 450 and 700°C. Temperature dependent on dielectric constant and powder X-ray diffraction measurements show that ferroelectricity is consistent with a phase transition at around 420°C. Results show that room temperature rombohedral structure transforms to cubic structure at high temperature.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 120134 |
| Deposited On: | 23 Jun 2021 06:17 |
| Last Modified: | 23 Jun 2021 06:17 |
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