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Synthesis of the superlattice complex oxide Sr5Bi4Ti8O27 and its band gap behavior
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10.1063/1.4722942
/content/aip/journal/apl/100/22/10.1063/1.4722942
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/22/10.1063/1.4722942
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

θ-2θ XRD scan of the Sr5Bi4Ti8O27 (001)/SrTiO3 (001) film, exhibiting only (ℓ = even) peaks associated with the superlattice and the substrate phase. * indicate substrate peaks.

Image of FIG. 2.
FIG. 2.

(a) Cross-sectional phase-contrast TEM image of the same Sr5Bi4Ti8O27 film studied in Fig. 1, showing periodic n = 8 layering, with a scaled schematic of the structure inset. (b) A zone-axis nano-diffraction pattern of the same cross-section of the Sr5Bi4Ti8O27 film, showing well-defined superlattice reflections.

Image of FIG. 3.
FIG. 3.

(a) Comparison of the complex dielectric function spectra (ɛ = ɛ1 + iɛ2) of Sr5Bi4Ti8O27 obtained by numerical inversion (open circles) and parameterization (solid line). ɛ for SrTiO3 data is shown for comparison (dotted line). (b) Plots of (αE)2 and (αE)1/2 as functions of photon energy for Sr5Bi4Ti8O27. Dashed lines are linear fits to regions of the data.

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/content/aip/journal/apl/100/22/10.1063/1.4722942
2012-05-31
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Synthesis of the superlattice complex oxide Sr5Bi4Ti8O27 and its band gap behavior
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/22/10.1063/1.4722942
10.1063/1.4722942
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