The transformations of the two known solid phases of HTaWO6, pyrochlore and trirutile, under visible light laser irradiation, have been investigated using Raman spectroscopy. Pyrochlore specimens show a transition to a trirutile phase after strong irradiation in air. The same effect is also obtained by heating up to 700°C. A more moderate irradiation of pyrochlore samples in an oxygen-free environment produces a different transformation to a phase similar to Ta2O5. The trirutile phase always decomposes, even under weak light exposure, into two compounds: WO3 and another material also similar to Ta2O5
Cazzanelli, E., Mariotto, G., Catti, M., Mari, C. (1992). Photo-induced transformations in pyrochlore and trirutile phases of HTaWO6. SOLID STATE IONICS, 53–56(1), 383-390 [10.1016/0167-2738(92)90404-D].
Photo-induced transformations in pyrochlore and trirutile phases of HTaWO6
CATTI, MICHELE;MARI, CLAUDIO MARIA
1992
Abstract
The transformations of the two known solid phases of HTaWO6, pyrochlore and trirutile, under visible light laser irradiation, have been investigated using Raman spectroscopy. Pyrochlore specimens show a transition to a trirutile phase after strong irradiation in air. The same effect is also obtained by heating up to 700°C. A more moderate irradiation of pyrochlore samples in an oxygen-free environment produces a different transformation to a phase similar to Ta2O5. The trirutile phase always decomposes, even under weak light exposure, into two compounds: WO3 and another material also similar to Ta2O5
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
