Raman scattering study of phase transitions in CsScF4 crystal

Aleksander N. Vtyurin; Aleksander S. Krylov; Ilya V. Shmygol; Anatoly P. Shebanin; Andrew G. Ageev; Sergey V. Goryainov; Alain Bulou

doi:10.1117/12.378135

18 February 2000 Raman scattering study of phase transitions in CsScF₄ crystal

Aleksander N. Vtyurin, Aleksander S. Krylov, Ilya V. Shmygol, Anatoly P. Shebanin, Andrew G. Ageev, Sergey V. Goryainov, Alain Bulou

Author Affiliations +

Proceedings Volume 4069, Raman Scattering; (2000) https://doi.org/10.1117/12.378135
Event: Raman Scattering, 1998, Moscow, Russian Federation

Abstract

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 ben found under high pressure, new high pressure phase is supposed to be of low, C_2h², Z equals 4 symmetry, the same as in KAlF₄ crystal.

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Aleksander N. Vtyurin, Aleksander S. Krylov, Ilya V. Shmygol, Anatoly P. Shebanin, Andrew G. Ageev, Sergey V. Goryainov, and Alain Bulou "Raman scattering study of phase transitions in CsScF₄ crystal", Proc. SPIE 4069, Raman Scattering, (18 February 2000); https://doi.org/10.1117/12.378135

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