| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Pressure-Induced Phase Transition of V2O3 |
| ZHANG Qian, WU Xiang**, QIN Shan |
Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education & School of Earth and Space Sciences, Peking University, Beijing 100871
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| Cite this article: |
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ZHANG Qian, WU Xiang, QIN Shan 2012 Chin. Phys. Lett. 29 106101 |
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Abstract In situ high pressure experiment of V2O3 is carried out by means of synchrotron radiation angle dispersive x-ray diffraction with the diamond anvil cell technique up to about 42 GPa at room temperature. A reversible phase transition unreported previously is observed at above 31 GPa. The c-axis compressibility of corundum-type V2O3 shows an abnormal behavior, i.e., the axial length increasing up to 9 GPa then decreasing at higher pressures, which could be attributed to the 3d electronic interaction. The results of compression for V2O3 are described by the second-order Birch–Murnaghan equation of state with V0=300.2(4) ?3 and B0=255(9) GPa.
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Received: 20 March 2012
Published: 01 October 2012
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| PACS: |
61.05.cp
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(X-ray diffraction)
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61.50.Ks
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(Crystallographic aspects of phase transformations; pressure effects)
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64.60.-i
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(General studies of phase transitions)
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