Pressure-Induced Phase Transition of V2O3

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2012,（10）
• 页码范围: 148-150
• 页数: 3页
• 语种: 英文
• DOI: 10.1088/0256-307X/29/10/106101

摘要

In situ high pressure experiment of V2 O3 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 V2 O3 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) (A)3 and B0 =255(9) GPa.