Exploring ferroelectric and magnetic properties of Tb-substituted m = 5 layered Aurivillius phase thin films

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dc.contributor.authorFaraz, Ahmad
dc.contributor.authorRicote, Jesus
dc.contributor.authorJimenez, Ricardo
dc.contributor.authorMaity, Tuhin
dc.contributor.authorSchmidt, Michael
dc.contributor.authorDeepak, Nitin
dc.contributor.authorRoy, Saibal
dc.contributor.authorPemble, Martyn E.
dc.contributor.authorKeeney, Lynette
dc.contributor.funderSeventh Framework Programmeen
dc.contributor.funderFP7 People: Marie-Curie Actionsen
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderHigher Education Authorityen
dc.contributor.funderRoyal Societyen
dc.date.accessioned2018-04-03T13:29:40Z
dc.date.available2018-04-03T13:29:40Z
dc.date.issued2018-03-22
dc.date.updated2018-04-03T12:04:45Z
dc.description.abstractHere, we report the effect of A-site substitution of Tb at the expense of Bi on the ferroelectric and magnetic properties in m = 5 layered 2-D Aurivillius Bi6Ti3Fe2O18 thin films. The nominal stoichiometry of the prepared compound is Tb0.40Bi5.6Fe2Ti3O18, Tb0.90Bi5.1Fe2Ti3O18, and Bi6Ti3Fe2O18. Phase examination reveals that only 0.40 mol. % is successfully substituted forming Tb0.40Bi5.6Fe2Ti3O18 thin films. Lateral and vertical piezoresponse switching loops up to 200 °C reveal responses for Bi6Ti3Fe2O18, Tb substituted Tb0.40Bi5.6Fe2Ti3O18, and Tb0.90Bi5.1Fe2Ti3O18 thin films along the in-plane (±42.31 pm/V, 88 pm/V and ±134 pm/V, respectively) compared with the out-of-plane (±6.15 pm/V, 19.83 pm/V and ±37.52 pm/V, respectively). The macroscopic in-plane polarization loops reveal in-plane saturation (Ps) and remanence polarization (Pr) for Bi6Ti3Fe2O18 of ±26.16 μC/cm2 and ±22 μC/cm2, whereas, ±32.75 μC/cm2 and ±22.11 μC/cm2, ±40.30 μC/cm2 and ±28.5 μC/cm2 for Tb0.40Bi5.6Fe2Ti3O18 and Tb0.90Bi5.1Fe2Ti3O18 thin films, respectively. No ferromagnetic signatures were observed for Bi6Ti3Fe2O18 and Tb0.40Bi5.6Fe2Ti3O18. However, a weak response was observed for the Tb0.90Bi5.1Fe2Ti3O18 at 2 K. Microstructural analysis of Tb0.90Bi5.1Fe2Ti3O18 revealed that it contains 4 vol. % Fe:Tb rich areas forming FexTbyOz, which accounts for the observed magnetic moment. This study demonstrates the importance of thorough microstructural analysis when determining whether magnetic signatures can be reliably assigned to the single-phase system. We conclude that Tb0.40Bi5.6Fe2Ti3O18 and Tb0.90Bi5.1Fe2Ti3O18 samples are not multiferroic but demonstrate the potential for Fe-RAM applications.en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationFaraz, A., Ricote, J., Jimenez, R., Maity, T., Schmidt, M., Deepak, N., Roy, S., Pemble, M. E. and Keeney, L. (2018) 'Exploring ferroelectric and magnetic properties of Tb-substituted m = 5 layered Aurivillius phase thin films', Journal of Applied Physics, 123(12), 124101 (14pp). doi: 10.1063/1.5009986en
dc.identifier.doi10.1063/1.5009986
dc.identifier.endpage124101-14en
dc.identifier.issn0021-8979
dc.identifier.issn1089-7550
dc.identifier.issued12en
dc.identifier.journaltitleJournal of Applied Physicsen
dc.identifier.startpage124101-1en
dc.identifier.urihttps://hdl.handle.net/10468/5723
dc.identifier.volume123en
dc.language.isoenen
dc.publisherAIP Publishingen
dc.relation.projectinfo:eu-repo/grantAgreement/EC/FP7::SP3::PEOPLE/290158/EU/NANOELECTROMECHANICAL MOTION IN FUNCTIONAL MATERIALS/NANOMOTIONen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Strategic Research Cluster/07/SRC/I1172/IE/SRC FORME: Functional Oxides and Related Materials for Electronics/en
dc.relation.projectHigher Education Authority ((HEA) PRTLI 3, and the HEA PRTLI4 Project INSPIRE); Royal Society and Science Foundation Ireland (University Research Fellowship UF 140263)en
dc.relation.urihttps://aip.scitation.org/doi/abs/10.1063/1.5009986
dc.rights© 2018, AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Journal of Applied Physics 2018 123:12 and may be found at https://aip.scitation.org/doi/abs/10.1063/1.5009986en
dc.subjectBismuth compoundsen
dc.subjectDielectric polarisationen
dc.subjectFerroelectric materialsen
dc.subjectFerroelectric switchingen
dc.subjectFerroelectric thin filmsen
dc.subjectMagnetic momentsen
dc.subjectMagnetic thin filmsen
dc.subjectPiezoelectric materialsen
dc.subjectPiezoelectric thin filmsen
dc.subjectPiezoelectricityen
dc.subjectStoichiometryen
dc.subjectTerbium compoundsen
dc.subjectTiten
dc.titleExploring ferroelectric and magnetic properties of Tb-substituted m = 5 layered Aurivillius phase thin filmsen
dc.typeArticle (peer-reviewed)en
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