GYIG OpenIR  > 地球内部物质高温高压实验室
High-pressure and high-temperature Raman study of cinnabar
Jianjun Jiang;  Heping Li;  Chaoshuai Zhao;  Shuangming Shan;  Pan Wang
2017
Source PublicationSpectroscopy Letters
Volume50Issue:6Pages:342-346
Abstract

The effects of temperature (300-600K) and pressure (0-31.8GPa) on the Raman spectra of natural cinnabar powder were investigated in a heatable diamond anvil cell. Raman spectral changes caused by phase transitions were observed at high pressures, which suggests a phase transformation from pure hexagonal to the coexistence of a hexagonal and rock salt structure, and finally to the rock salt structure. With increasing pressure, A(1) and modes exhibited a blueshift (0.87cm(-1)/GPa) and redshift (-3.64cm(-1)/GPa), respectively, while both modes underwent a redshift (-2.22 and -2.09x10(-2)cm(-1)/K, respectively) with increasing temperature. The mode Gruneisen parameters of A(1) and http://www.w3.org/ at room temperature were calculated by the pressure dependences of the vibrational frequencies and the X-ray diffraction data from previous research. Simultaneous high-pressure and high-temperature results were globally fitted, and the coupling coefficients for temperature and pressure dependence of the Raman shifts were determined to be 7.28x10(-4) and 5.12x10(-4)cm(-1)/KGPa for A(1) and E-TO(2), respectively.

KeywordCinnabar High Pressure And High Temperature Phase Transition Raman Spectroscopy
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8085
Collection地球内部物质高温高压实验室
AffiliationChinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths In, Guiyang, Guizhou Provinc, Peoples R China
Recommended Citation
GB/T 7714
Jianjun Jiang;Heping Li;Chaoshuai Zhao;Shuangming Shan;Pan Wang. High-pressure and high-temperature Raman study of cinnabar[J]. Spectroscopy Letters,2017,50(6):342-346.
APA Jianjun Jiang;Heping Li;Chaoshuai Zhao;Shuangming Shan;Pan Wang.(2017).High-pressure and high-temperature Raman study of cinnabar.Spectroscopy Letters,50(6),342-346.
MLA Jianjun Jiang;Heping Li;Chaoshuai Zhao;Shuangming Shan;Pan Wang."High-pressure and high-temperature Raman study of cinnabar".Spectroscopy Letters 50.6(2017):342-346.
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