Fabrication of arrays of lead zirconate titanate (PZT) nanodots via block copolymer self-assembly

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dc.contributor.authorVarghese, Justin M.
dc.contributor.authorGhoshal, Tandra
dc.contributor.authorDeepak, Nitin
dc.contributor.authorO'Regan, Colm
dc.contributor.authorWhatmore, Roger W.
dc.contributor.authorMorris, Michael A.
dc.contributor.authorHolmes, Justin D.
dc.contributor.funderHigher Education Authorityen
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2016-02-10T17:06:59Z
dc.date.available2016-02-10T17:06:59Z
dc.date.issued2013-02-18
dc.date.updated2013-08-20T17:41:33Z
dc.description.abstractThis Article presents a simple methodology for the fabrication of two-dimensional arrays of lead zirconate titanate (PZT) nanodots on n-doped Si substrates via the directed self-assembly of PS-b-PEO block copolymer templates. The approach produces highly ordered PZT nanodot patterns, with lateral widths and heights as small as 20 and 10 nm, respectively, and a coverage density as high as ∼68 × 109 nanodots cm–2. The existence of a perovskite phase in the nanodots was confirmed by X-ray diffraction and X-ray photoelectron spectroscopy. The piezo-amplitude and ferroelectric domain response obtained from the nanodots, through piezoresponse force microscopy, confirmed the presence of ferroelectricity in the PZT arrays. Notably, PZT nanodots with a thickness ∼10 nm, which is close to the critical size limit of PZT, showed ferroelectric behavior. The presence of a multi-a/c domain structure in the nanodots was attributed to their polycrystalline nature.en
dc.description.sponsorshipScience Foundation Ireland (SFI Grants: 07/SRC/I1172 and 08/CE/I1432); Higher Education Authority (Program for Research in Third Level Institutions (2007-2011) via the INSPIRE program)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationVARGHESE, J., GHOSHAL, T., DEEPAK, N., O’REGAN, C., WHATMORE, R. W., MORRIS, M. A. & HOLMES, J. D. 2013. Fabrication of Arrays of Lead Zirconate Titanate (PZT) Nanodots via Block Copolymer Self-Assembly. Chemistry of Materials, 25, 1458-1463. http://dx.doi.org/10.1021/cm303759ren
dc.identifier.doi10.1021/cm303759r
dc.identifier.endpage1463en
dc.identifier.issn0897-4756
dc.identifier.issued8en
dc.identifier.journaltitleChemistry of Materialsen
dc.identifier.startpage1458en
dc.identifier.urihttps://hdl.handle.net/10468/2272
dc.identifier.volume25en
dc.language.isoenen
dc.publisherAmerican Chemical Societyen
dc.relation.urihttp://pubs.acs.org/doi/pdf/10.1021/cm303759r
dc.rights© 2013 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Chemistry of Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/pdf/10.1021/cm303759ren
dc.subjectBlock copolymeren
dc.subjectNanodoten
dc.subjectPFMen
dc.subjectPiezoelectricen
dc.subjectPZTen
dc.subjectBlock copolymer self-assemblyen
dc.subjectLead zirconate titanateen
dc.subjectNanodotsen
dc.subjectPiezoresponse force microscopyen
dc.subjectPS-b-PEO block copolymersen
dc.subjectSemiconducting lead compoundsen
dc.subjectFerroelectric materialsen
dc.subjectFerroelectricityen
dc.subjectNanostructured materialsen
dc.subjectPhotoelectronsen
dc.subjectScanning probe microscopyen
dc.subjectSelf assemblyen
dc.subjectX-ray diffractionen
dc.subjectX-ray photoelectron spectroscopyen
dc.titleFabrication of arrays of lead zirconate titanate (PZT) nanodots via block copolymer self-assemblyen
dc.typeArticle (peer-reviewed)en
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