Coexistence of triclinic and monoclinic phases in WO3 ceramics
Autor: | U. U. Gomes, J. Mendes Filho, A. G. Souza-Filho, Valder N. Freire, J. F. Julião, José Marcos Sasaki |
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Rok vydání: | 2000 |
Předmět: | |
Zdroj: | Journal of Raman Spectroscopy. 31:451-454 |
ISSN: | 1097-4555 0377-0486 |
Popis: | The 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. |
Databáze: | OpenAIRE |
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