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Dielectric response of soft mode in ferroelectric
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10.1063/1.2431448
/content/aip/journal/apl/90/3/10.1063/1.2431448
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/3/10.1063/1.2431448
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Terahertz-TDS measured power absorption (open circles) and the theoretical fitting through the classical pseudoharmonic model and the Bruggeman effective medium approximation (solid curve); (b) measured refractive index (open circles) and the theoretical fitting (solid curve).

Image of FIG. 2.
FIG. 2.

Complex dielectric constant of : (a) measured real part of dielectric constant (open circles) and the theoretical fitting (solid curve); (b) measured imaginary dielectric constant (open circles) and the theoretical fitting (solid curve).

Image of FIG. 3.
FIG. 3.

(Color online) Completed low-frequency optical response of : the open circles are measured by terahertz-TDS in the frequency region of , and the solid curve is the Raman spectrum recorded from . The inset shows the detailed feature of the measured TO1 mode.

Image of FIG. 4.
FIG. 4.

(Color online) Comparison of terahertz-TDS results of (a) power absorption and (b) refractive index of pure powder (squares) with that of single-crystalline (circles) and thin-film (crosses, obtained from Ref. 7) . The solid lines represent theoretical fit.

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/content/aip/journal/apl/90/3/10.1063/1.2431448
2007-01-16
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Dielectric response of soft mode in ferroelectric SrTiO3
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/3/10.1063/1.2431448
10.1063/1.2431448
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