Configurational splitting in Raman scattering spectra of crystals with the order-disorder type phase transitions

A system of equations for the averaged phonon Green function determining the shapes of the lines in Raman scattering spectra is obtained in the coherent potential approximation. Configurationally split components of the Raman scattering are studied within a simple model. For the KH₂PO₄ and the CsH...

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Datum:1999
Hauptverfasser: Stasyuk, I.V., Ivankiv, Ya.L.
Format: Artikel
Sprache:English
Veröffentlicht: Інститут фізики конденсованих систем НАН України 1999
Schriftenreihe:Condensed Matter Physics
Online Zugang:http://dspace.nbuv.gov.ua/handle/123456789/119929
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Zitieren:Configurational splitting in Raman scattering spectra of crystals with the order-disorder type phase transitions / I.V. Stasyuk, Ya.L. Ivankiv // Condensed Matter Physics. — 1999. — Т. 2, № 1(17). — С. 155-171. — Бібліогр.: 18 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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Zusammenfassung:A system of equations for the averaged phonon Green function determining the shapes of the lines in Raman scattering spectra is obtained in the coherent potential approximation. Configurationally split components of the Raman scattering are studied within a simple model. For the KH₂PO₄ and the CsH₂PO₄-type ferroelectrics the possibility to observe the configurational splitting experimentally is discussed.