High-pressure Raman study of osmium and rhenium up to 200 GPa and pressure dependent elastic shear modulus C_(44)  

作　　者：Jingyi Liu Yu Tao Chunmei Fan Binbin Wu Qiqi Tang Li Lei 刘静仪;陶雨;范春梅;吴彬彬;唐琦琪;雷力(Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China)

机构地区：[1]Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China

出　　处：《Chinese Physics B》2022年第3期545-549,共5页中国物理B（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Grant Nos. 11774247 and U2030107);Sichuan University Innovation Research Program of China (Grant No. 2020SCUNL107)。

摘　　要：High-pressure Raman scattering from hexagonal close-packed(HCP) metals Os and Re have been extended up to 200 GPa, and the pressure-dependent shear modulus C_(44)has been deduced from the Raman-active mode E_(28), which is generated from the adjacent vibration of atoms in hexagonal planes, providing the valuable information about the elastic properties for HCP metals under high pressure. Combined with the available data of HCP metals from previous works,a further study indicates that the C_(44)/C_(44)ratio would be close to a constant value, 0.01, with increasing atomic number of metals. The results obtained from high-pressure Raman scattering will allow us to probe the elastic anisotropy of the HCP metals at very high pressure.

关 键 词：hexagonal close-packed(HCP)metals OSMIUM RHENIUM high-pressure Raman scattering shear modulus C_(44) 

分 类 号：O48[理学—固体物理]