Effect of tetragonal-tetragonal phase transition on Raman spectra and lattice dynamics of CsScF4 crystal

Effect of tetragonal-tetragonal phase transition on Raman spectra and lattice dynamics of CsScF4 crystal

Raman scattering spectra of CsScF4 crystal has been studied in both tetragonal phases, and lattice dynamics of the upper phase has been simulated numerically. Soft mode condensation at Brillouin zone boundary was obtained in the model simulations, and observed in experimental spectra below the tetra...

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Veröffentlicht in:Ferroelectrics 1999-09, Vol.233 (1), p.103-110
Hauptverfasser: Krylov, A. S., Shmygol, I. V., Shebanin, A. P., Vtyurin, A. N., Ageev, A. G., Fleisher, O. I.
Format: Artikel
Sprache:eng
Schlagworte:
CsScF
lattice dynamics
Raman spectra
soft mode
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Zusammenfassung:Raman scattering spectra of CsScF4 crystal has been studied in both tetragonal phases, and lattice dynamics of the upper phase has been simulated numerically. Soft mode condensation at Brillouin zone boundary was obtained in the model simulations, and observed in experimental spectra below the tetragonal-tetragonal phase transition.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150199908017000