Produção Nacional
Revisado por pares
Coexistence of triclinic and monoclinic phases in WO3 ceramics
2000; Wiley; Volume: 31; Issue: 6 Linguagem: Inglês
10.1002/1097-4555(200006)31
ISSN1097-4555
AutoresA. G. Souza Filho, V. N. Freire, J. M. Sasaki, J. Mendes Fílho, J. F. Juli�o, Uílame Umbelino Gomes,
Tópico(s)Luminescence Properties of Advanced Materials
ResumoThe coexistence of phases in WO3 ceramics sintered within the 600–1000 °C temperature range is investigated using Raman microprobe spectroscopy. The analysis of vibrational modes indicates the existence of triclinic (VI) P1 and monoclinic (V) P21/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) P1 phase at the 800 °C sintering temperature. Copyright © 2000 John Wiley & Sons, Ltd.
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