The cubic-to-monoclinic phase transition in (NH4)(3)ScF6 cryolite: A ramanscattering study

Authors
Vtyurin, AN Bulou, A Krylov, AS Afanas'ev, ML Shebanin, AP
Citation
An. Vtyurin et al., The cubic-to-monoclinic phase transition in (NH4)(3)ScF6 cryolite: A ramanscattering study, PHYS SOL ST, 43(12), 2001, pp. 2307-2310
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICS OF THE SOLID STATE
ISSN journal
10637834 → ACNP
Volume
43
Issue
12
Year of publication
2001
Pages
2307 - 2310
Database
ISI
SICI code
1063-7834(2001)43:12<2307:TCPTI(>2.0.ZU;2-T
Abstract
This paper reports on a Raman study of the cubic-to-monoclinic phase transi tion in (NH4)(3)ScF6 cryolite. We observed sharp anomalies in the frequenci es and half-widths of the Raman lines corresponding to internal vibrations of the ScF63+ ions and to lattice vibrations; no soft lattice mode condensa tion was revealed. It is concluded that the phase transition studied is rel ated primarily to the orientational ordering of these ions. (C) 2001 MAIK " Nauka/ Interperiodica".