High-pressure Raman study of MgV_2O_6synthesized at highpressure and high temperature  

作　　者：唐瑞莲 李岩 陶强 李娜娜 李会 韩丹丹 朱品文 王欣 

机构地区：[1]State Key Laboratory of Superhard Materials,Jilin University [2]College of Physics,Jilin University

出　　处：《Chinese Physics B》2013年第6期472-474,共3页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 51172091);the Program for New Century Excellent Talents in University

摘　　要：A new structural phase of MgV2O6 was obtained by a high-pressure, high-temperature （HPHT） synthesis method. The new phase was investigated by the Rietveld analysis of X-ray powder diffraction data, showing space group Pbcn （No. 60） symmetry and a = 13.6113（6）A （1A =0.1 nm）, b = 5.5809（1）A, c = 4.8566（3）A, V = 368.93（2）A3 （Z = 4）. High pressure behavior was studied by Raman spectroscopy at room temperature. Under 22.5 GPa, there was no sign of a structural phase transition in the spectra, demonstrating stability of the HPHT phase up to the highest pressure.A new structural phase of MgV2O6 was obtained by a high-pressure, high-temperature （HPHT） synthesis method. The new phase was investigated by the Rietveld analysis of X-ray powder diffraction data, showing space group Pbcn （No. 60） symmetry and a = 13.6113（6）A （1A =0.1 nm）, b = 5.5809（1）A, c = 4.8566（3）A, V = 368.93（2）A3 （Z = 4）. High pressure behavior was studied by Raman spectroscopy at room temperature. Under 22.5 GPa, there was no sign of a structural phase transition in the spectra, demonstrating stability of the HPHT phase up to the highest pressure.

关 键 词：high-pressure and high-temperature MgV2O6 Raman spectroscopy high-pressure 

分 类 号：O52[理学—高压高温物理]