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Coexistence of triclinic and monoclinic phases in WO3 ceramics

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JOURNAL OF RAMAN SPECTROSCOPY, 31 (6): 451-454 (2000)
DOI: 10.1002/1097-4555(200006)31:6<451::AID-JRS528>3.0.CO;2-K

Аннотация

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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