中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Artificial shock wave impact studies on Olivine single crystal - A Raman spectroscopic approach

文献类型:期刊论文

作者Sivakumar Aswathappa; Dai Lidong; S. Sahaya Jude Dhas; Raju Suresh Kumar
刊名Ceramics International
出版日期2024
卷号50期号:22页码:46252-46258
关键词Acoustic Shock Waves Olivine Crystal Raman Spectroscopy Phase Transitions
DOI10.1016/j.ceramint.2024.08.467
英文摘要

After the invention of indoor tabletop shock tubes, studies on the impact of low-pressure acoustic shock waves on materials have been sufficiently conducted and found several spectacular phase transitions. However, the acoustic shock wave impact studies on minerals remain unexplored. The floodgates are to be opened by streamlining a systematic approach in bringing out a new era of spectacular findings as more and more minerals are involved in the investigation. Hence, in the present investigation, we have chosen one of the most prominent upper mantle earth minerals of α-Olivine (forsterite-Mg2SiO4single crystal for the ex-situ shock wave recovery experiment with 2.0 MPa transient pressure. Raman spectroscopic technique has been utilized to examine the crystallographic stability of the title mineral. The observed shock-wave impact results demonstrate that the forsterite remains to be in the crystallized state maintaining the same space group of Pbnm, however, significant changes have been witnessed in the normalized intensity ratio of the characteristic doublet Raman peaks of the forsterite (asymmetry stretching SiO4 (824 cm−1)/symmetry stretching SiO4 (855 cm−1) such that the values are found to be 2.17, 2.27, 1.38, 0.51, and 2.43 against the number of shock pulses of 0, 1, 2, 3 and 4, respectively. It is to be noted that, we have found more pronounced changes in the doublet Raman peak intensity compared to the flat plate accelerator shock compression experiment on forsterite (Tielke et al., J. Geophys. Res. Planets (2022)) and the observed values are 0.8, 0.3, 0.6, 0.8 and 0.52 for 0, 21.3, 22.4, 38.9 and 41.8 GPa, respectively without undergoing any structural transitions towards the high-pressure phases. Based on the assessment of comparative results, tabletop shock-tubes can be strongly considered for mineralogical research to expand the current knowledge on the behaviors of the earth and space minerals under extreme-conditions.

 

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语种英语
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专题地球化学研究所_地球内部物质高温高压实验室
作者单位1.Key Laboratory of High-temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou, 550081, China
2.Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabi
3.Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, 602105, India
推荐引用方式
GB/T 7714
Sivakumar Aswathappa,Dai Lidong,S. Sahaya Jude Dhas,et al. Artificial shock wave impact studies on Olivine single crystal - A Raman spectroscopic approach[J]. Ceramics International,2024,50(22):46252-46258.
APA Sivakumar Aswathappa,Dai Lidong,S. Sahaya Jude Dhas,&Raju Suresh Kumar.(2024).Artificial shock wave impact studies on Olivine single crystal - A Raman spectroscopic approach.Ceramics International,50(22),46252-46258.
MLA Sivakumar Aswathappa,et al."Artificial shock wave impact studies on Olivine single crystal - A Raman spectroscopic approach".Ceramics International 50.22(2024):46252-46258.

入库方式: OAI收割

来源:地球化学研究所

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