Raman spectra of stronadelphite Sr-5(PO4)(3)F at high pressures

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	Raman spectra of stronadelphite Sr-5(PO4)(3)F at high pressures
	Shuangmeng Zhai; Sean R. Shieh; Weihong Xue
刊名	Physics & Chemistry of Minerals
	2015
卷号	42 期号:7 页码:579-585
英文摘要	The Raman spectra of synthetic stronadelphite, Sr-5(PO4)(3)F, were investigated up to 21.1 GPa using a diamond anvil cell at room temperature. The new splittings of the PO4 asymmetric stretching nu(3b)(A(g)) and bending nu(4b)(A(g)) vibrations were observed during compression. The Raman frequencies of all observed bands for stronadelphite continuously increase with increasing pressure. The quantitative analysis of pressure dependences of Raman bands indicates that the nu(3) asymmetric and nu(1) symmetric stretching vibrations show larger pressure coefficients (from 3.33 to 5.20 cm(-1)/GPa), whereas the nu(4) and nu(2) bending vibrations have smaller pressure coefficients (from 1.35 to 1.96 cm(-1)/GPa), which may be attributed to the pressure-induced structural evolution of PO4 tetrahedron in stronadelphite at high pressure. The external modes show larger pressure coefficient from 3.47 to 6.41 cm(-1)/GPa. The pressure coefficients of the PO4 internal modes lead to the isothermal mode Gruneisen parameters varying from 0.214 to 0.449, which yields an average mode Gruneisen parameter of 0.332. On the other hand, those of the external modes give the isothermal mode Gruneisen parameters from 1.53 to 1.91. Therefore, the external mode Gruneisen parameters mainly contribute to the bulk Gruneisen parameters.
学科主题	地球深部物质与流体作用地球化学
语种	英语
公开日期	2017-05-17
内容类型	期刊论文
源URL	[http://ir.gyig.ac.cn:8080/handle/352002/6050]
专题	地球化学研究所_地球内部物质高温高压实验室_地球内部物质高温高压实验室_期刊论文
推荐引用方式 GB/T 7714	Shuangmeng Zhai,Sean R. Shieh,Weihong Xue. Raman spectra of stronadelphite Sr-5(PO4)(3)F at high pressures[J]. Physics & Chemistry of Minerals,2015,42(7):579-585.
APA	Shuangmeng Zhai,Sean R. Shieh,&Weihong Xue.(2015).Raman spectra of stronadelphite Sr-5(PO4)(3)F at high pressures.Physics & Chemistry of Minerals,42(7),579-585.
MLA	Shuangmeng Zhai,et al."Raman spectra of stronadelphite Sr-5(PO4)(3)F at high pressures".Physics & Chemistry of Minerals 42.7(2015):579-585.