Singh, Akhilesh Kumar ; Pandey, Dhananjai ; Zaharko, Oksana (2006) Evolution of short-range to long-range monoclinic order of MB type with decreasing temperature in 0.75[Pb(Mg1/3Nb2/3)O 3]-0.25PbTiO3 Journal of Applied Physics, 99 (7). 076105_1-076105_3. ISSN 0021-8979
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Official URL: http://jap.aip.org/resource/1/japiau/v99/i7/p07610...
Related URL: http://dx.doi.org/10.1063/1.2188047
Abstract
Results of Rietveld analysis of powder neutron diffraction data on 0.75[Pb(Mg1/3Nb2/3)O3]-0.25PbTiO3 (PMN-0.25PT) at room temperature and 80 K are presented. It is shown that the currently believed structural model based on average rhombohedral structure (space group R3m) with local <110> disordered Pb atoms cannot account for the structure of PMN-0.25PT at 80 K. The low temperature structure of PMN-0.25PT is best refined using Cm space group of MB type. It is argued that with decreasing temperature the short-range monoclinic order at 300 K grows into a truly long-range ordered monoclinic structure at 80 K.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| ID Code: | 27257 |
| Deposited On: | 10 Dec 2010 12:52 |
| Last Modified: | 05 Mar 2011 09:41 |
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