Tunable nanoscale structural disorder in Aurivillius phase, n = 3 Bi4Ti3O12 thin films and their role in the transformation to n = 4, Bi5Ti3FeO15 phase

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dc.contributor.authorDeepak, Nitin
dc.contributor.authorCarolan, Patrick B.
dc.contributor.authorKeeney, Lynette
dc.contributor.authorPemble, Martyn E.
dc.contributor.authorWhatmore, Roger W.
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderInternational Centre for Graduate Education in Micro and Nano Engineering (ICGEE)
dc.date.accessioned2016-01-28T12:18:15Z
dc.date.available2016-01-28T12:18:15Z
dc.date.issued2015-05-05
dc.description.abstractNaturally super-latticed Aurivillius phase ferroelectrics can accommodate various magnetic ions, opening up the possibility of making new room temperature multiferroics. Here, we studied the growth of single-phase Aurivillius phase Bi5Ti3FeO15 (BTFO) thin films, grown onto single crystalline SrTiO3 (STO) substrates, by doping Bi4Ti3O12 (BTO) with iron by liquid injection metal-organic chemical vapour deposition. The crystalline properties of the resulting films were characterized by X-ray diffraction and transmission electron microscopy. It has been found that the structural properties of the films depend strongly on the relative iron and titanium precursor injection volumes. Nanoscale structural disorder starts to occur in BTO films on the onset of iron precursor flow. A small iron precursor flow causes the formation of half-unit cells of BTFO inside BTO lattice, which in turns causes disorder in BTO films. This disorder can be tuned by varying iron content in the film. Atomic force microscopy shows how the growth mode switches from island growth to layer-by-layer growth mode as the composition changes from BTO to BTFO.en
dc.description.sponsorshipInternational Centre for Graduate Education in Micro and Nano Engineering (PhD Scholarship for Nitin Deepak); Science Foundation Ireland (FORME Strategic Research Cluster Award Number 07/SRC/I1172, Principal Investigator Grant Number 11/PI/1117 for Martyn Pemble)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationDeepak, N., Carolan, P., Keeney, L., Pemble, M. E. and Whatmore, R. W. (2015) 'Tunable nanoscale structural disorder in Aurivillius phase, n = 3 Bi4Ti3O12 thin films and their role in the transformation to n = 4, Bi5Ti3FeO15 phase', Journal of Materials Chemistry C, 3(22), pp. 5727-5732. doi: 10.1039/c5tc01064ken
dc.identifier.doi10.1039/c5tc01064k
dc.identifier.endpage5732en
dc.identifier.issn2050-7526
dc.identifier.issued22en
dc.identifier.journaltitleJournal of Materials Chemistry Cen
dc.identifier.startpage5727en
dc.identifier.urihttps://hdl.handle.net/10468/2222
dc.identifier.volume3en
dc.language.isoenen
dc.publisherRoyal Society of Chemistryen
dc.rights© 2015, the Authors. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.en
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectMolecular beam epitaxyen
dc.subjectLaminate compositesen
dc.subjectRoom-temperatureen
dc.subjectTerfenol-Den
dc.subjectFerroelectricsen
dc.subjectHeterostructuresen
dc.subjectDepositionen
dc.subjectMorphologyen
dc.subjectTitanateen
dc.subjectBehavioren
dc.titleTunable nanoscale structural disorder in Aurivillius phase, n = 3 Bi4Ti3O12 thin films and their role in the transformation to n = 4, Bi5Ti3FeO15 phaseen
dc.typeArticle (peer-reviewed)en
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