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Conference Paper: Nanoscale manipulation of BiFeO3 multipolorizaion switching modes utilizing SPM tip
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TitleNanoscale manipulation of BiFeO3 multipolorizaion switching modes utilizing SPM tip
 
AuthorsShi, Y
Soh, AK
 
Issue Date2011
 
PublisherMaterials Research Society.
 
CitationThe International Conference on Materials for Advanced Technologies (ICMAT 2011), Singapore, 26 June-1 July 2011. In Proceedings of ICMAT, 2011, v. H, p. 49 [How to Cite?]
 
AbstractAn anisotropic mechanism has been developed to investigate the complex multipolarization switching in epitaxial BiFeO3 films, under a biased-SPM-tip field. Switching inhomogeneity and domain wall width evolution have been specifically accounted for in the model developed. It has been found that distinct switching modes, i.e., the breakdown mode of 71°-switched domain and activation mode of 180°/109° switching, exist and dominate switching orders over polarization reversal. Our predicted switching sequences show excellent agreements with the existing experimental data and phase-field results. A procedure is proposed by precisely manipulating temporal tip-bias to fabricate single-phase 71° ferroelastic domain-array of controllable density using (001) BiFeO3 films, which is practically favored to significantly enhance the magnetoelectric coupling and photovoltage.
 
DescriptionSymposium H - Nanodevices and Nanofabrication: ICMAT11-A-0715
 
ISBN978-981-08-8878-7
 
DC FieldValue
dc.contributor.authorShi, Y
 
dc.contributor.authorSoh, AK
 
dc.date.accessioned2012-07-16T09:56:12Z
 
dc.date.available2012-07-16T09:56:12Z
 
dc.date.issued2011
 
dc.description.abstractAn anisotropic mechanism has been developed to investigate the complex multipolarization switching in epitaxial BiFeO3 films, under a biased-SPM-tip field. Switching inhomogeneity and domain wall width evolution have been specifically accounted for in the model developed. It has been found that distinct switching modes, i.e., the breakdown mode of 71°-switched domain and activation mode of 180°/109° switching, exist and dominate switching orders over polarization reversal. Our predicted switching sequences show excellent agreements with the existing experimental data and phase-field results. A procedure is proposed by precisely manipulating temporal tip-bias to fabricate single-phase 71° ferroelastic domain-array of controllable density using (001) BiFeO3 films, which is practically favored to significantly enhance the magnetoelectric coupling and photovoltage.
 
dc.description.naturelink_to_OA_fulltext
 
dc.descriptionSymposium H - Nanodevices and Nanofabrication: ICMAT11-A-0715
 
dc.description.otherThe International Conference on Materials for Advanced Technologies (ICMAT 2011), Singapore, 26 June-1 July 2011. In Proceedings of ICMAT, 2011, v. H, p. 49
 
dc.identifier.citationThe International Conference on Materials for Advanced Technologies (ICMAT 2011), Singapore, 26 June-1 July 2011. In Proceedings of ICMAT, 2011, v. H, p. 49 [How to Cite?]
 
dc.identifier.epage49
 
dc.identifier.hkuros200542
 
dc.identifier.isbn978-981-08-8878-7
 
dc.identifier.openurl
 
dc.identifier.spage49
 
dc.identifier.urihttp://hdl.handle.net/10722/153089
 
dc.identifier.volumeH
 
dc.languageeng
 
dc.publisherMaterials Research Society.
 
dc.publisher.placeSingapore
 
dc.relation.ispartofProceedings of International Conference on Materials for Advanced Technologies
 
dc.rightsProceedings of International Conference on Materials for Advanced Technologies. Copyright © Materials Research Society.
 
dc.titleNanoscale manipulation of BiFeO3 multipolorizaion switching modes utilizing SPM tip
 
dc.typeConference_Paper
 
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