High-pressure behavior of nano titanium dioxide

J.S. Olsen, Leif Gerward, Jianzhong Jiang

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Nanocrystalline rutile Titanium dioxide has been studied by X-ray diffraction at ambient temperature up to 47.4 GPa. The material is found to transform to the monoclinic baddeleyite structure between 20 and 30 GPa, which is higher than the corresponding pressure range for bulk material. Upon decompression, the baddeleyite phase transforms to the alpha-PbO2 phase at about 4-2 GPa. The experimental bulk moduli are 211(7) GPa for the rutile phase, 235(16) for the baddeleyite type and 212(25) GPa for the alpha-PbO2 type phase. The results are compared with previous measurements of bulk rutile Titanium dioxide.
Original languageEnglish
JournalHigh Pressure Research
Volume22
Issue number2
Pages (from-to)385-389
ISSN0895-7959
Publication statusPublished - 2002

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