DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, KY | ko |
dc.contributor.author | Do, SH | ko |
dc.contributor.author | Lemmens, P | ko |
dc.contributor.author | Wulferding, D | ko |
dc.contributor.author | Woo, CS | ko |
dc.contributor.author | Lee, JH | ko |
dc.contributor.author | Chu, K | ko |
dc.contributor.author | Yang, Chan-Ho | ko |
dc.date.accessioned | 2013-03-11T11:10:55Z | - |
dc.date.available | 2013-03-11T11:10:55Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2011-10 | - |
dc.identifier.citation | PHYSICAL REVIEW B, v.84, no.13, pp.132408 | - |
dc.identifier.issn | 1098-0121 | - |
dc.identifier.uri | http://hdl.handle.net/10203/99106 | - |
dc.description.abstract | We present evidence for a concomitant structural and ferroelectric transformation around T-S similar to 360 K in multiferroic BiFeO3/LaAlO3 thin films close to the tetragonal phase. Phonon excitations are investigated by using Raman scattering as a function of temperature. The low-energy phonon modes at 180-260 cm(-1) related to the FeO6 octahedron tilting show anomalous behaviors upon cooling through T-S: (i) a large hardening amounting to 15 cm(-1), (ii) an increase of intensity by one order of magnitude, and (iii) an appearance of a dozen new modes. In contrast, the high-frequency modes exhibit only weak anomalies. This suggests an intimate coupling of octahedron tilting to ferroelectricity leading to a simultaneous change of structural and ferroelectric properties. | - |
dc.language | English | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Anomalous low-energy phonons in nearly tetragonal BiFeO3 thin films | - |
dc.type | Article | - |
dc.identifier.wosid | 000295869600001 | - |
dc.identifier.scopusid | 2-s2.0-80155206209 | - |
dc.type.rims | ART | - |
dc.citation.volume | 84 | - |
dc.citation.issue | 13 | - |
dc.citation.beginningpage | 132408 | - |
dc.citation.publicationname | PHYSICAL REVIEW B | - |
dc.identifier.doi | 10.1103/PhysRevB.84.132408 | - |
dc.contributor.localauthor | Yang, Chan-Ho | - |
dc.contributor.nonIdAuthor | Choi, KY | - |
dc.contributor.nonIdAuthor | Do, SH | - |
dc.contributor.nonIdAuthor | Lemmens, P | - |
dc.contributor.nonIdAuthor | Wulferding, D | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | PHASE | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.