Elastic properties of Mg-phase D at high pressure

IF 1.2 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

High Pressure Research Pub Date : 2021-07-03 DOI:10.1080/08957959.2021.1954177

Chaowen Xu, Ying Li, T. Inoue, S. Gréaux, Qingze Li, Jing Gao, F. Sun, Leiming Fang

引用次数: 1

Abstract

ABSTRACT The sound velocities of polycrystalline Mg-phase D were investigated at the pressure up to 13.6 GPa and room temperature, using ultrasonic interferometry in a multi-anvil apparatus. The P (VP ) and S (VS ) wave velocities obtained at ambient conditions produced the results of VP = 9.26(3) km/s and VS = 5.46(1) km/s. The results are in accordance with the values for Mg-phase D by Brillouin scattering (VP = 9.25 km/s and VS = 5.51km/s). The results, i.e. Ks0 = 153.8(13) GPa and G0 = 99.8(5) GPa obtained through two-dimensional linear fitting analysis are self-consistent with Ks0 = 153.3(16) GPa and G0 = 99.5(10) GPa derived by third-order Eulerian finite strain equations. We also find that Vp of phase D is 1.8–2.2% lower than Fe-ringwoodite, but Vs is higher than Fe-ringwoodite at the bottom of the mantle transition zone by up to 1.3%.

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mg相D在高压下的弹性性能

摘要在高达13.6的压力下，研究了多晶Mg相D的声速 GPa和室温，在多砧装置中使用超声波干涉测量法。在环境条件下获得的P（VP）和S（VS）波速度产生了VP的结果 = 9.26（3）km/s和VS = 5.46（1）公里/秒。结果与通过布里渊散射得到的Mg相D的值（VP = 9.25公里/秒和VS = 5.51km/s）。结果，即Ks0 = 153.8（13）GPa和G0 = 通过二维线性拟合分析获得的99.8（5）GPa与Ks0自洽 = 153.3（16）GPa和G0 = 由三阶欧拉有限应变方程导出的99.5（10）GPa。我们还发现，在地幔过渡带底部，D相的Vp比铁环木矿低1.8–2.2%，但Vs比铁环木矿高出1.3%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

High Pressure Research 物理-物理：综合

CiteScore

3.80

自引率

5.00%

发文量

审稿时长

2 months

期刊介绍： High Pressure Research is the leading journal for research in high pressure science and technology. The journal publishes original full-length papers and short research reports of new developments, as well as timely review articles. It provides an important forum for the presentation of experimental and theoretical advances in high pressure science in subjects such as: condensed matter physics and chemistry geophysics and planetary physics synthesis of new materials chemical kinetics under high pressure industrial applications shockwaves in condensed matter instrumentation and techniques the application of pressure to food / biomaterials Theoretical papers of exceptionally high quality are also accepted.