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Conference Paper: Nanoscale manipulation of BiFeO3 multipolorizaion switching modes utilizing SPM tip

TitleNanoscale manipulation of BiFeO3 multipolorizaion switching modes utilizing SPM tip
Authors
Shi, YSoh, AK
Issue Date2011
PublisherMaterials Research Society.
Citation
The 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
Persistent Identifierhttp://hdl.handle.net/10722/153089
ISBN
978-981-08-8878-7

 

DC FieldValueLanguage
dc.contributor.authorShi, Yen_US
dc.contributor.authorSoh, AKen_US
dc.date.accessioned2012-07-16T09:56:12Z-
dc.date.available2012-07-16T09:56:12Z-
dc.date.issued2011en_US
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. 49en_US
dc.identifier.isbn978-981-08-8878-7en_US
dc.identifier.urihttp://hdl.handle.net/10722/153089-
dc.descriptionSymposium H - Nanodevices and Nanofabrication: ICMAT11-A-0715-
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.languageengen_US
dc.publisherMaterials Research Society.en_US
dc.relation.ispartofProceedings of International Conference on Materials for Advanced Technologiesen_US
dc.rightsProceedings of International Conference on Materials for Advanced Technologies. Copyright © Materials Research Society.en_US
dc.titleNanoscale manipulation of BiFeO3 multipolorizaion switching modes utilizing SPM tipen_US
dc.typeConference_Paperen_US
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=978-981-08-8878-7&volume=H&spage=49&epage=&date=2011&atitle=Nanoscale+manipulation+of+BiFeO3+multipolarization+switching+modes+utilizing+SPM+Tipen_US
dc.identifier.emailSoh, AK: aksoh@hku.hken_US
dc.identifier.authoritySoh, AK=rp00170en_US
dc.description.naturelink_to_OA_fulltext-
dc.identifier.hkuros200542en_US
dc.identifier.volumeHen_US
dc.identifier.spage49en_US
dc.identifier.epage49en_US
dc.publisher.placeSingapore-
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-

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