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dc.contributor.authorNylund, Inger-Emma
dc.contributor.authorRæder, Trygve Magnus
dc.contributor.authorVullum, Per Erik
dc.contributor.authorGrande, Tor
dc.date.accessioned2021-03-18T13:54:36Z
dc.date.available2021-03-18T13:54:36Z
dc.date.created2021-02-24T08:52:32Z
dc.date.issued2021
dc.identifier.issn0021-8979
dc.identifier.urihttps://hdl.handle.net/11250/2734271
dc.description.abstractChemical solution deposition (CSD) is a versatile method to fabricate oxide films. Here, the structure and local variations in the chemical composition of BaTiO3 (BTO) films prepared by CSD on (100), (110), and (111) SrTiO3 (STO) substrates were examined by transmission electron microscopy. The films were shown to be epitaxial and the relaxation of the films occurred by the formation of edge dislocations at the substrate–film interfaces. The Burgers vectors of the dislocations were determined to be a⟨010⟩, a[11¯0] and a[001], and a⟨110⟩ for the (100), (110), and (111) films, respectively. Due to the difference in thermal expansion between STO and BTO, the films are demonstrated to be under tensile strain. Furthermore, the boundaries between each deposited layer in the BTO films were found to be Ba-deficient in all cases. In the case of the (111) oriented film, defects like an anti-phase boundary or a thin layer with a twinned crystal structure were identified at the boundary between each deposited layer. Moreover, a larger grain was observed at the film surface with a twinned crystal structure. The interdiffusion length of A-cations at the STO–BTO interface, studied by electron energy-loss spectroscopy, was found to be 3.4, 5.3, and 5.3 nm for the (100), (110), and (111) oriented films, respectively. Interdiffusion of cations across the STO–BTO interface was discussed in relation to cation diffusion in bulk BTO and STO. Despite the presence of imperfections demonstrated in this work, the films possess excellent ferroelectric properties, meaning that none of the imperfections are detrimental to the ferroelectric properties.en_US
dc.language.isoengen_US
dc.publisherAIP Publishingen_US
dc.titleEpitaxial (100), (110), and (111) BaTiO3 films on SrTiO3 substrates — A transmission electron microscopy studyen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionacceptedVersionen_US
dc.source.journalJournal of Applied Physicsen_US
dc.identifier.doihttps://doi.org/10.1063/5.0045011
dc.identifier.cristin1893034
dc.relation.projectNorges forskningsråd: 250403/F20en_US
dc.relation.projectNorges forskningsråd: 295864en_US
dc.relation.projectNorges forskningsråd: 197405/F50en_US
dc.relation.projectNorges forskningsråd: 275139/F20en_US
dc.description.localcodeThis is the authors’ accepted and refereed manuscript to the article. 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 (citation of published article) and may be found at https://doi.org/10.1063/5.0045011en_US
cristin.ispublishedfalse
cristin.fulltextpostprint
cristin.qualitycode1


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