CRYSTAL-GROWTH, RAMAN AND INFRARED-SPECTRA OF BAFI SINGLE-CRYSTALS

被引：15
|
作者：
SIESKIND, M
AYACHOUR, D
MERLE, JC
BOULOU, JC
机构：
[1] CRN LAB PHASE,F-67037 STRASBOURG,FRANCE
[2] BRUKER SPECTROSPIN,F-67160 WISSEMBOURG,FRANCE
来源：
PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1990年 / 158卷 / 01期
关键词：
D O I：
10.1002/pssb.2221580109
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Single crystals of BaFI are synthetized and their Raman and infrared properties are investigated at room temperature. The reflectivity is measured between 50 and 4000 cm−1 using a Fourier transform infrared spectrometer. The experimental reflection spectra are analysed by means of the classical oscillator model and the Kramers‐Kronig transformation to obtain the TO and LO frequencies and the optical constants. The position of the Raman and infrared modes of the matlockite series (PbFCl) are qualitatively discussed. The most significant force constants of the dynamical matrix are estimated from the high frequency Raman modes. Copyright © 1990 WILEY‐VCH Verlag GmbH & Co. KGaA
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收藏
页码：103 / 112
页数：10
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