A Raman study of multiferroic LuMnO3
| Autor: | Jyoti Ranjan Sahu, Anirban Ghosh, S. Venkataprasad Bhat, C. N. R. Rao |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Condensed matter physics Phonon General Chemistry Dielectric Hexagonal manganites Condensed Matter Physics Manganite Ferroelectricity Condensed Matter::Materials Science symbols.namesake symbols Antiferromagnetism Condensed Matter::Strongly Correlated Electrons General Materials Science Multiferroics Raman spectroscopy |
| Zdroj: | Solid State Sciences. 11:1639-1642 |
| ISSN: | 1293-2558 |
| DOI: | 10.1016/j.solidstatesciences.2009.06.002 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect