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dc.contributor.authorChiu, Shang-Juien_US
dc.contributor.authorLiu, Yen-Tingen_US
dc.contributor.authorLee, Hsin-Yien_US
dc.contributor.authorYu, Ge-Pingen_US
dc.contributor.authorHuang, Jia-Hongen_US
dc.date.accessioned2014-12-08T15:31:08Z-
dc.date.available2014-12-08T15:31:08Z-
dc.date.issued2013-07-31en_US
dc.identifier.issn0040-6090en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.tsf.2013.05.004en_US
dc.identifier.urihttp://hdl.handle.net/11536/22177-
dc.description.abstractAsymmetric superlattice structures consisting of SrTiO3 (STO) and multiferroic BiFeO3 (BFO) sublayers were deposited on a Nb-doped STO (001) substrate with a radio frequency magnetron sputtering system. For an investigation of the effect of strain on the microstructures, ferroelectric properties and piezoelectric properties resulting from a difference of lattice parameters of the BFO sublayer, varying the thickness of the STO sublayer in a range 1-2.5 nm introduced interfacial strain into the superlattice. The epitaxial relation and strain state of films were clearly observed with a synchrotron as a source of radiation. The results of X-ray diffraction measurements clearly showed that the decrease of strain was related to the thickness of the STO substrate. A separate diffraction signal of the superlattice structure with thickness >= 1.75 nm of the STO sublayer was found, indicating a large strain relaxation in these superlattice films. The remnant polarization values P-r, piezoelectric coefficient d(33) and leakage properties of the BFO/STO superlattice thin films that improved with increasing in-plane strain provide strong evidence of a strain-enhancement effect. The BFO/STO superlattice with a well defined crystal structure and a large strain state showed a large P-r, greater than a BFO single layer of the same thickness. (C) 2013 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectSuperlattice structuresen_US
dc.subjectInterfacial strainen_US
dc.subjectRadio-frequency sputteringen_US
dc.subjectBismuth ferriteen_US
dc.titleStrain enhanced ferroelectric properties of multiferroic BiFeO3/SrTiO3 superlattice structure prepared by radio frequency magnetron sputteringen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.tsf.2013.05.004en_US
dc.identifier.journalTHIN SOLID FILMSen_US
dc.citation.volume539en_US
dc.citation.issueen_US
dc.citation.spage75en_US
dc.citation.epage80en_US
dc.contributor.department加速器光源科技與應用學位學程zh_TW
dc.contributor.departmentMaster and Ph.D. Program for Science and Technology of Accelrrator Light Sourceen_US
dc.identifier.wosnumberWOS:000321111100013-
dc.citation.woscount0-
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