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ChemInform Abstract: Pressure-Induced Phase Transition of Fe2TiO4: X-Ray Diffraction and Moessbauer Spectroscopy.

✍ Scribed by Ye Wu; Xiang Wu; Shan Qin

Publisher: John Wiley and Sons
Year: 2012
Weight: 19 KB
Volume: 43
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.201213008

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✦ Synopsis

Pressure-Induced Phase Transition of Fe 2 TiO 4 : X-Ray Diffraction and Moessbauer Spectroscopy. -Structural stability of the title compound under high pressure up to about 24 GPa at room temperature is investigated by XRD and Moessbauer spectroscopy. Fe2TiO4 undergoes phase transitions from cubic (Fd3m) to tetragonal (I41/amd) at 8.7 GPa, and then to an orthorhombic (Cmcm) phase at 16.0 GPa. The high-pressure orthorhombic phase is preserved upon decompression to ambient pressure. The iron ions are in a Fe 2+ high spin state over the whole pressure range.

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