Singh, Akhilesh Kumar ; Pandey, Dhananjai (2003) Evidence for MB and MC phases in the morphotropic phase boundary region of (1-x)[Pb(Mg1/3Nb2/3)O3]-xPbTiO3: a rietveld study Physical Review B, 67 (6). 064102_1-064102_12. ISSN 1098-0121
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Official URL: http://link.aps.org/doi/10.1103/PhysRevB.67.064102
Related URL: http://dx.doi.org/10.1103/PhysRevB.67.064102
Abstract
We present here the results of the room-temperature dielectric measurements and Rietveld analysis of the powder x-ray diffraction data on (1-x)[Pb(Mg1/3Nb2/3)O3]-xPbTiO3(PMN-xPT) in the composition range 0.20<~x<~0.45 to show that the morphotropic phase boundary region contains two monoclinic phases with space groups Cm (or MB type) and Pm (or MC type) stable in the composition ranges 0.27<~x<~0.30 and 0.31<~x<~0.34, respectively. The structure of PMN-xPT in the composition ranges 0<~x<~0.26 and 0.35<~x<~1 is found to be rhombohedral (R3m) and tetragonal (P4mm), respectively. These results are compared with the predictions of Vanderbilt &Cohen's theory.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 27235 |
| Deposited On: | 10 Dec 2010 12:55 |
| Last Modified: | 05 Mar 2011 09:48 |
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