Presentation Information
[R3P-03]Pressure-induced phase transitions of tridymite by Raman spectroscopy
*Masami Kanzaki1 (1. Okayama U. IPM)
Keywords:
tridymite,pressure-induced phase transition,Raman spectroscopy
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The pressure-induced phase transitions of tridymite (MC, MX-1, PO-10) were investigated by in-situ Raman spectroscopy. Starting from MC, the phase transition to PO-10 was observed at about 0.3 GPa, and new Raman peaks appeared at 1.5 GPa. The similar transitions were observed for MX-1 and PO-10, and PO-10 was always recovered. This observation suggests that the rare PO-10 in the meteorite may have been altered by shock events from the more common MC.
The pressure-induced phase transitions of tridymite (MC, MX-1, PO-10) were investigated by in-situ Raman spectroscopy. Starting from MC, the phase transition to PO-10 was observed at about 0.3 GPa, and new Raman peaks appeared at 1.5 GPa. The similar transitions were observed for MX-1 and PO-10, and PO-10 was always recovered. This observation suggests that the rare PO-10 in the meteorite may have been altered by shock events from the more common MC.