RAMAN STUDIES OF STRUCTURAL PHASE-TRANSITION IN CS3BI2BR9

Authors
BATOR G BARAN J JAKUBAS R KARBOWIAK M
Citation
G. Bator et al., RAMAN STUDIES OF STRUCTURAL PHASE-TRANSITION IN CS3BI2BR9, Vibrational spectroscopy, 16(1), 1998, pp. 11-20
Citations number
12
Categorie Soggetti
Spectroscopy,"Chemistry Analytical","Chemistry Physical
Journal title
Vibrational spectroscopy → ACNP
ISSN journal
09242031
Volume
16
Issue
1
Year of publication
1998
Pages
11 - 20
Database
ISI
SICI code
0924-2031(1998)16:1<11:RSOSPI>2.0.ZU;2-Z
Abstract
The phase transition at 95 K in Cs3Bi2Br9 have been investigated in de tail by the Raman spectroscopy. A systematic study on temperature depe ndencies of the frequencies and bandwidths in the wavenumber range 0-2 50 cm(-1) confirmed continuous nature of the phase transition. A soft mode is suggested to exist in the low temperature phase. The mechanism of the phase transition has a displacive nature. (C) 1998 Elsevier Sc ience B.V.