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Resonance Raman scattering of relaxors and
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10.1063/1.2433763
/content/aip/journal/apl/90/4/10.1063/1.2433763
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/4/10.1063/1.2433763

Figures

Image of FIG. 1.
FIG. 1.

Real (upper curves) and imaginary (lower curves) of the optical dielectric constant of PST (bold lines) and PSN (thin lines) determined from optical ellipsometric measurements (Sentech Instuments); the band gap value is according to Ref. 12. The vertical lines indicate the light wavelengths used to excite the Raman scattering of PST and PSN.

Image of FIG. 2.
FIG. 2.

Raman scattering of PST and PSN measured at different wavelengths of the incident light; for clarity the spectra of PST and PSN measured at are divided by factors of 7 and 15, respectively. The Raman scattering collected with is nearly the same as that collected with .

Image of FIG. 3.
FIG. 3.

-excited Raman scattering of PST and PSN (bold lines). The band between 750 and , determined from the Raman-active stretching modes of octahedra, was fitted with two Lorentzian components (thin lines) accounting for the contribution from the paraelectric and ferroelectric nanodomains; the dashed lines represent the resulting spectrum profile. The ratio is equal to 0.28 and 0.12 for PST and PSN, respectively.

Image of FIG. 4.
FIG. 4.

(Color online) Raman scattering excited with a laser wavelength of ; from top to bottom: PST, PSTN, PSTS, PSN, PSSN, and PLSN. For clarity, the spectrum of PLSN is vertically offset by .

Tables

Generic image for table
Table I.

Chemical composition, tolerance factors , and room-temperature unit cell parameters of the studied samples.

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/content/aip/journal/apl/90/4/10.1063/1.2433763
2007-01-23
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Resonance Raman scattering of relaxors PbSc0.5Ta0.5O3 and PbSc0.5Nb0.5O3
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/4/10.1063/1.2433763
10.1063/1.2433763
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