High-pressure Raman study of osmium and rhenium up to 200 GPa and pressure dependent elastic shear modulus C44

doi:10.1088/1674-1056/ac1eff

中国物理B ›› 2022, Vol. 31 ›› Issue (3): 37801-037801.doi: 10.1088/1674-1056/ac1eff

High-pressure Raman study of osmium and rhenium up to 200 GPa and pressure dependent elastic shear modulus C₄₄

Jingyi Liu(刘静仪), Yu Tao(陶雨), Chunmei Fan(范春梅), Binbin Wu(吴彬彬), Qiqi Tang(唐琦琪), and Li Lei(雷力)^†

Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China

收稿日期:2021-06-11 修回日期:2021-07-23 接受日期:2021-08-19 出版日期:2022-02-22 发布日期:2022-02-17
通讯作者: Li Lei E-mail:lei@scu.edu.cn
基金资助:
We thank Prof. Filippo for helpful discussions. This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 11774247 and U2030107) and Sichuan University Innovation Research Program of China (Grant No. 2020SCUNL107).

High-pressure Raman study of osmium and rhenium up to 200 GPa and pressure dependent elastic shear modulus C₄₄

Jingyi Liu(刘静仪), Yu Tao(陶雨), Chunmei Fan(范春梅), Binbin Wu(吴彬彬), Qiqi Tang(唐琦琪), and Li Lei(雷力)^†

Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China

Received:2021-06-11 Revised:2021-07-23 Accepted:2021-08-19 Online:2022-02-22 Published:2022-02-17
Contact: Li Lei E-mail:lei@scu.edu.cn
Supported by:
We thank Prof. Filippo for helpful discussions. This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 11774247 and U2030107) and Sichuan University Innovation Research Program of China (Grant No. 2020SCUNL107).

摘要/Abstract

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 C₄₄ has been deduced from the Raman-active mode E_2g, 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 $C_{44}^\prime/C_{44}$ 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 C₄₄

Abstract: 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 C₄₄ has been deduced from the Raman-active mode E_2g, 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 $C_{44}^\prime/C_{44}$ 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.

Key words: hexagonal close-packed (HCP) metals, osmium, rhenium, high-pressure Raman scattering, shear modulus C₄₄

中图分类号: (Solid metals and alloys ?)

78.30.Er

62.20.de (Elastic moduli) 81.40.Vw (Pressure treatment)

Jingyi Liu(刘静仪), Yu Tao(陶雨), Chunmei Fan(范春梅), Binbin Wu(吴彬彬), Qiqi Tang(唐琦琪), and Li Lei(雷力). High-pressure Raman study of osmium and rhenium up to 200 GPa and pressure dependent elastic shear modulus C₄₄[J]. 中国物理B, 2022, 31(3): 37801-037801.

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High-pressure Raman study of osmium and rhenium up to 200 GPa and pressure dependent elastic shear modulus C₄₄

High-pressure Raman study of osmium and rhenium up to 200 GPa and pressure dependent elastic shear modulus C₄₄

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