Raman studies of structural phase transition in Cs3Bi2Br9

被引：33

作者：

Bator, G

Baran, J

Jakubas, R

Karbowiak, M

机构：

[1] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland

[2] Univ Wroclaw, Fac Chem, PL-50383 Wroclaw, Poland

来源：

VIBRATIONAL SPECTROSCOPY | 1998年 / 16卷 / 01期

关键词：

Raman spectroscopy; phase transitions; halogeno-bismuthates (III);

D O I：

10.1016/S0924-2031(97)00041-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The phase transition at 95 K in Cs3Bi2Br9 have been investigated in detail by the Raman spectroscopy. A systematic study on temperature dependencies of the frequencies and bandwidths in the wavenumber range 0-250 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 Science B.V.

引用

页码：11 / 20

页数：10

共 12 条

[1]

ISHIHARA H, 1992, Z NATURFORSCH A, V47, P65

[2]

JAGODZINSKI PW, 1980, J RAMAN SPECTROSC, V9, P1

[3] PHASE-TRANSITIONS IN ALKYLAMMONIUM HALOGENOANTIMONATES AND BISMUTHATES [J].