Coexistence of triclinic and monoclinic phases in WO3 ceramics

被引：0
|
作者：
Souza, AG
Freire, VN
Sasaki, JM
Mendes, J
Juliao, JF
Gomes, UU
机构：
[1] Univ Fed Ceara, Dept Fis, BR-60455760 Fortaleza, Ceara, Brazil
[2] Univ Fortaleza, BR-60811341 Fortaleza, Ceara, Brazil
[3] Univ Fed Rio Grande Norte, Dept Fis Teor & Expt, BR-59072910 Natal, RN, Brazil
来源：
JOURNAL OF RAMAN SPECTROSCOPY | 2000年 / 31卷 / 06期
关键词：
D O I：
10.1002/1097-4555(200006)31:6<451::AID-JRS528>3.0.CO;2-K
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The coexstence of phases in WO3 ceramics sintered within the 600-1000 degrees C temperature range is investigated using Raman microprobe spectroscopy, The analysis of vibrational modes indicates the existence of triclinic (VI) P (1) over bar and monoclinic (V) P2(1)/n phases mixing. The concentration ratio between WO3 microcrystals in the former and the latter phases is shown to depend on the ceramics sintering temperature, reaching a maximum value favouring the triclinic (VI) P (1) over bar phase at the 800 degrees C sintering temperature. Copyright (C) 2000 John Whey & Sons, Ltd.
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页码：451 / 454
页数：4
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