Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.5010601
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dc.titleTemperature controlled evolution of monoclinic to super-tetragonal phase of epitaxial BiFeO3 thin films on La0.67Sr0.33MnO3 buffered SrTiO3 substrate
dc.contributor.authorSingh A.
dc.contributor.authorKaifeng D.
dc.contributor.authorChen J.-S.
dc.date.accessioned2020-09-08T03:24:32Z
dc.date.available2020-09-08T03:24:32Z
dc.date.issued2018
dc.identifier.citationSingh A., Kaifeng D., Chen J.-S. (2018). Temperature controlled evolution of monoclinic to super-tetragonal phase of epitaxial BiFeO3 thin films on La0.67Sr0.33MnO3 buffered SrTiO3 substrate. AIP Advances 8 (3) : 35221. ScholarBank@NUS Repository. https://doi.org/10.1063/1.5010601
dc.identifier.issn2158-3226
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/174606
dc.description.abstractEpitaxial BiFeO3 thin films of 130nm were deposited by pulsed laser deposition (PLD) technique on La0.67Sr0.33MnO3 buffered SrTiO3 (001) substrate at various temperatures under different ambient oxygen pressures. Reciprocal space mapping reveals that, with decreasing temperature and oxygen pressure, the broadly reported monoclinic phase (MA) of BiFeO3 thin film initially transforms to a tetragonal phase (T1) with c/a =1.05 (1) in a narrow girth of deposition condition and then to a super-tetragonal phase (T2) with giant c/a = 1.24 (1), as confirmed by reciprocal space mapping using high resolution x-ray diffraction. The surface morphology of the films reveals the island growth of the BiFeO3 films deposited at low temperatures. We propose that the transformation from monoclinic to the super-tetragonal phase is essentially due to the manifestation of excess local strain as a result of the island growth. This study offers a recipe to grow the super-tetragonal phase of BiFeO3, with giant c/a =1.24 (1) which exhibits exceptionally large ferroelectric polarization, on ferromagnetic layer La0.67Sr0.33MnO3. This phase of BiFeO3 can be utilized for the ferroelectric control of magnetism at the interface of BiFeO3 and La0.67Sr0.33MnO3. © 2018 Author(s).
dc.sourceUnpaywall 20200831
dc.subjectFerroelectricity
dc.subjectIron compounds
dc.subjectLanthanum compounds
dc.subjectMagnetism
dc.subjectManganese compounds
dc.subjectMapping
dc.subjectOxygen
dc.subjectProgrammable logic controllers
dc.subjectPulsed laser deposition
dc.subjectStrontium titanates
dc.subjectThin films
dc.subjectTitanium compounds
dc.subjectX ray diffraction
dc.subjectDeposition conditions
dc.subjectFerroelectric polarization
dc.subjectFerromagnetic layers
dc.subjectHigh resolution X ray diffraction
dc.subjectMonoclinic phase
dc.subjectReciprocal space mapping
dc.subjectSrTiO3 substrates
dc.subjectTetragonal phase
dc.subjectBismuth compounds
dc.typeArticle
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.description.doi10.1063/1.5010601
dc.description.sourcetitleAIP Advances
dc.description.volume8
dc.description.issue3
dc.description.page35221
dc.published.statePublished
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