Raman scattering study of phase transitions in CsScF4 crystal

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Год издания: 2000

Ключевые слова: Cesium compounds, Computer simulation, Condensation, Heating, High pressure effects, High temperature effects, Phase transitions, Soft mode condensation, Tetragonal-tetragonal phase transitions, Raman scattering

Аннотация: Raman scattering spectra of CsScF4 crystal has been studied under high temperature and pressure. Soft mode condensation was observed below tetragonal-tetragonal phase transition under heating, and lattice dynamics simulation of the upper phase has been performed to clarify the form of the unstable mode. New first order phase transition has been found under high pressure; new high pressure phase is supposed to be of low, C2h 2, Z = 4, symmetry, the same as in KAlF4 crystal.

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Издание

Журнал: Proceedings of SPIE - The International Society for Optical Engineering

Выпуск журнала: Vol. 4069

Номера страниц: 53-58

Персоны

Vtyurin A.N. (Krasnoyarsk State Univ)
Krylov A.S. (Krasnoyarsk State Univ)
Shmygol I.V. (Krasnoyarsk State Univ)
Shebanin A.P. (Krasnoyarsk State Univ)
Ageev A.G. (Krasnoyarsk State Univ)
Goryainov S.V. (Krasnoyarsk State Univ)
Bulou A. (Krasnoyarsk State Univ)

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