DC Field | Value | Language |
---|---|---|
dc.contributor.author | Campanini, Marco | ko |
dc.contributor.author | Erni, Rolf | ko |
dc.contributor.author | Yang, Chan-Ho | ko |
dc.contributor.author | Ramesh, Ramamoorthy | ko |
dc.contributor.author | Rossell, Marta D. | ko |
dc.date.accessioned | 2018-03-23T00:15:51Z | - |
dc.date.available | 2018-03-23T00:15:51Z | - |
dc.date.created | 2018-03-20 | - |
dc.date.created | 2018-03-20 | - |
dc.date.created | 2018-03-20 | - |
dc.date.issued | 2018-02 | - |
dc.identifier.citation | NANO LETTERS, v.18, no.2, pp.717 - 724 | - |
dc.identifier.issn | 1530-6984 | - |
dc.identifier.uri | http://hdl.handle.net/10203/240945 | - |
dc.description.abstract | The ultimate challenge for the development of new multiferroics with enhanced properties lies in achieving nanoscale control of the coupling between different ordering parameters. In oxide-based multiferroics, substitutional cation dopants offer the unparalleled possibility to modify both the electric and magnetic properties at a local scale. Herein it is demonstrated the formation of a dopant-controlled polar pattern in BiFeO3 leading to the spontaneous instauration of periodic polarization waves. In particular, nonpolar Ca-doped rich regions act as spacers between consecutive dopant-depleted regions displaying coupled ferroelectric states. This alternation of layers with different ferroelectric state creates a novel vertical polar structure exhibiting giant polarization gradients as large as 70 mu C cm(-2) across 30 angstrom thick domains. The drastic change in the polar state of the film is visualized using high-resolution differential phase-contrast imaging able to map changes in ferroelectric polarization at atomic scale. Furthermore, a periodic distortion in the Fe-O-Fe bonding angle suggests a local variation in the magnetic ordering. The findings provide a new insight into the role of doping and reveal hitherto unexplored means to tailor the functional properties of multiferroics by doping engineering. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | FERROELECTRIC PROPERTIES | - |
dc.subject | ROOM-TEMPERATURE | - |
dc.subject | MULTIFERROICS | - |
dc.subject | STRAIN | - |
dc.subject | ENHANCEMENT | - |
dc.subject | PEROVSKITES | - |
dc.subject | MICROSCOPY | - |
dc.title | Periodic Giant Polarization Gradients in Doped BiFeO3 Thin Films | - |
dc.type | Article | - |
dc.identifier.wosid | 000425559700010 | - |
dc.identifier.scopusid | 2-s2.0-85042097334 | - |
dc.type.rims | ART | - |
dc.citation.volume | 18 | - |
dc.citation.issue | 2 | - |
dc.citation.beginningpage | 717 | - |
dc.citation.endingpage | 724 | - |
dc.citation.publicationname | NANO LETTERS | - |
dc.identifier.doi | 10.1021/acs.nanolett.7b03817 | - |
dc.contributor.localauthor | Yang, Chan-Ho | - |
dc.contributor.nonIdAuthor | Campanini, Marco | - |
dc.contributor.nonIdAuthor | Erni, Rolf | - |
dc.contributor.nonIdAuthor | Ramesh, Ramamoorthy | - |
dc.contributor.nonIdAuthor | Rossell, Marta D. | - |
dc.description.isOpenAccess | Y | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Bismuth ferrite | - |
dc.subject.keywordAuthor | ferroelectric polarization | - |
dc.subject.keywordAuthor | doping | - |
dc.subject.keywordAuthor | scanning transmission electron microscopy | - |
dc.subject.keywordAuthor | differential-phase contrast | - |
dc.subject.keywordAuthor | Bismuth ferrite | - |
dc.subject.keywordAuthor | ferroelectric polarization | - |
dc.subject.keywordAuthor | doping | - |
dc.subject.keywordAuthor | scanning transmission electron microscopy | - |
dc.subject.keywordAuthor | differential-phase contrast | - |
dc.subject.keywordPlus | FERROELECTRIC PROPERTIES | - |
dc.subject.keywordPlus | ROOM-TEMPERATURE | - |
dc.subject.keywordPlus | MULTIFERROICS | - |
dc.subject.keywordPlus | STRAIN | - |
dc.subject.keywordPlus | ENHANCEMENT | - |
dc.subject.keywordPlus | PEROVSKITES | - |
dc.subject.keywordPlus | MICROSCOPY | - |
dc.subject.keywordPlus | FERROELECTRIC PROPERTIES | - |
dc.subject.keywordPlus | ROOM-TEMPERATURE | - |
dc.subject.keywordPlus | MULTIFERROICS | - |
dc.subject.keywordPlus | STRAIN | - |
dc.subject.keywordPlus | ENHANCEMENT | - |
dc.subject.keywordPlus | PEROVSKITES | - |
dc.subject.keywordPlus | MICROSCOPY | - |
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