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Single-crystal elasticity of the rhodochrosite at high pressure by Brillouin scattering spectroscopy
Chaoshuai Zhao;  Heping Li;  Pofei Chen;  Jianjun Jiang;  Wen Liang
2018
Source PublicationHigh Pressure Research
Pages1-11
Abstract

The sound velocity properties of single-crystal rhodochrosite
(MnCO3) were determined up to 9.7 GPa at ambient temperature
by Brillouin scattering spectroscopy. Six elastic constants were
calculated by a genetic algorithm method using the Christoffel’s
equations at each pressure. The elastic constants increased
linearly as a function of pressure and its pressure derivatives ∂Cij/
∂P for C11, C33, C44, C12, C13, C14 were 5.86 (±0.36), 3.82 (±0.44),
2.06 (±0.39), 5.07 (±0.27), 5.34 (±0.44), 1.52 (±0.24), respectively.
Based on the derived elastic constants of rhodochrosite, the
aggregate adiabatic bulk and shear moduli (Ks and G) were
calculated using the Voigt-Reuss-Hill averages and the linear
fitting coefficients (∂Ks/∂P)T and (∂G/∂P)T were 5.05(±0.26) and 0.73
(±0.05), respectively. The aggregate Vp of rhodochrosite increased
clearly as a function of pressure and its pressure derivative ∂Vp/∂P
was 7.99(±0.53) × 10−2 km/(s GPa), while the aggregate Vs
increased slowly and ∂Vs/∂P was only 1.19(±0.12) × 10−2 km/
(s GPa). The anisotropy factor for As of rhodochrosite increased
from ∼40% at 0.8 GPa to ∼48% at 9.7 GPa, while Ap decreased
from ∼19% to ∼16% at the corresponding pressure.

KeywordBrillouin Scattering Sound Velocity Elasticity Rhodochrosite High Pressure
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8175
Collection地球内部物质高温高压实验室
Affiliation1.Key Laboratory of High-temperature and High pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, People’s Republic of China
2.College of Earth Sciences, University of Chinese Academy of Sciences, Beijing,People’s Republic of China
3.Department of Earth Sciences, National Central University, Taoyuan, Taiwan
Recommended Citation
GB/T 7714
Chaoshuai Zhao;Heping Li;Pofei Chen;Jianjun Jiang;Wen Liang. Single-crystal elasticity of the rhodochrosite at high pressure by Brillouin scattering spectroscopy[J]. High Pressure Research,2018:1-11.
APA Chaoshuai Zhao;Heping Li;Pofei Chen;Jianjun Jiang;Wen Liang.(2018).Single-crystal elasticity of the rhodochrosite at high pressure by Brillouin scattering spectroscopy.High Pressure Research,1-11.
MLA Chaoshuai Zhao;Heping Li;Pofei Chen;Jianjun Jiang;Wen Liang."Single-crystal elasticity of the rhodochrosite at high pressure by Brillouin scattering spectroscopy".High Pressure Research (2018):1-11.
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