Ghosh, Anirban ; Sahu, Jyoti Ranjan ; Venkataprasad Bhat, S. ; Rao, C. N. R. (2009) A Raman study of multiferroic LuMnO3 Solid State Sciences, 11 (9). pp. 1639-1642. ISSN 1293-2558
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.solidstatesciences.2009.06.002
Abstract
Magnetic and dielectric measurements confirm the multiferroic nature of LuMnO3. Raman spectra of LuMnO3 have been recorded in the 77-800 K range covering both the antiferromagnetic transition at 90 K and the ferroelectric-paraelectric transition at 750 K. The changes in the phonon modes frequencies and band-widths indicate the presence of phonon-spin coupling in the antiferromagnetically ordered phase. The ferroelectric-paraelectric transition is accompanied by the broadening and disappearance of many of the phonon modes. Some of the phonon modes also show anomalies at the ferroelectric transition.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Multiferroics; Raman Spectroscopy; LuMnO3; Phonons; Hexagonal Manganites |
| ID Code: | 42441 |
| Deposited On: | 02 Jun 2011 14:05 |
| Last Modified: | 02 Jun 2011 14:05 |
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