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.
2012, Vol. 29 
