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Dielectric and Raman scattering studies of phase transitions in the system
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) X-ray powder diffraction profiles of at room temperature and (b) slow-scan data of {111} peak. The inset in Fig. 1(b) shows the variation in {111} peak position as a function of .

Image of FIG. 2.
FIG. 2.

[(a)–(c)] High temperature x-ray powder diffraction profiles of with , 20, and 40, (d) variation in {111} and {200} peak positions with temperature.

Image of FIG. 3.
FIG. 3.

Room temperature Raman spectra of (a) NBT and ST, and (b) .

Image of FIG. 4.
FIG. 4.

(a) Wavenumber variation in individual bands and (b) their corresponding full-width at half maximum as a function of composition.

Image of FIG. 5.
FIG. 5.

Raman spectra of with (a) , (b) , (c) , and (d) at different temperatures between 25 and .

Image of FIG. 6.
FIG. 6.

Wavenumber variation in some strong modes as a function of temperature for (a) , (b) , (c) , and (d) .

Image of FIG. 7.
FIG. 7.

Temperature-dependent dielectric constant and dielectric loss tangent of for (a) , (b) , (c) , (d) , and (e) .

Image of FIG. 8.
FIG. 8.

Variation in (a) , (b) , (c) , and (d) as a function of at 1, 10, and 100 kHz.

Image of FIG. 9.
FIG. 9.

Temperature-composition phase diagram of the system determined by the present dielectric (open symbols) and Raman spectroscopy (solid symbols) measurements. The symbols ◻, ○, and △ corresponds to , , and , respectively.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Dielectric and Raman scattering studies of phase transitions in the (100−x)Na0.5Bi0.5TiO3–xSrTiO3 system