| High pressure Raman investigations of multiferroic BiFeO(3). | |
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MedLine Citation:
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PMID: 21832378 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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We have reported a Raman scattering investigation of bismuth ferrite (BiFeO(3)) under high pressure up to 50 GPa. Distinct changes in the Raman spectra show evidence for three pressure-induced structural transitions. The abrupt frequency redshifts of the Raman modes near 300 cm(-1) at around 3 GPa are attributed to the modulation of the FeO(6) octahedral tilts. The disappearance of the modes below 250 cm(-1) at 8.6 GPa, together with the enhancement of the two modes in the range of 300-400 cm(-1), indicate the phase transition from the rhombohedral to orthorhombic symmetry. Afterward, the E-3 and E-4 modes disappear at 44.6 GPa, pointing to the occurrence of the orthorhombic-cubic phase transition, which is consistent with the previous postulate that an orthorhombic-cubic transition takes place across the metal-insulator transition at high pressures. |
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Authors:
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Y Yang; L G Bai; K Zhu; Y L Liu; S Jiang; J Liu; J Chen; X R Xing |
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Publication Detail:
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Type: Journal Article Date: 2009-08-24 |
Journal Detail:
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Title: Journal of physics. Condensed matter : an Institute of Physics journal Volume: 21 ISSN: 1361-648X ISO Abbreviation: J Phys Condens Matter Publication Date: 2009 Sep |
Date Detail:
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Created Date: 2011-08-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101165248 Medline TA: J Phys Condens Matter Country: England |
Other Details:
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Languages: eng Pagination: 385901 Citation Subset: IM |
Affiliation:
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Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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