Pressure-dependent Raman spectra of beta-Ca-3(PO4)(2) whitlockite

	Pressure-dependent Raman spectra of beta-Ca-3(PO4)(2) whitlockite
	Shuangmeng Zhai; Xiang Wu; Weihong Xue
	2015
发表期刊	Physics and Chemistry of Minerals
卷号	42 期号:4 页码:303-308
摘要	The pressure dependence of Raman spectra for whitlockite beta-Ca-3(PO4)(2) was investigated up to 18.0 GPa using a diamond-anvil cell at room temperature. The Raman frequencies of all observed bands for beta-Ca-3(PO4)(2) continuously increase with increasing pressure. The quantitative analysis of pressure dependence of Raman bands for the sample shows that the nu (3) asymmetric and nu (1) symmetric stretching vibrations are with the larger pressure coefficients (from 3.44 to 4.59 cm(-1) GPa(-1)) and that the nu (4) bending and nu (2) deforming vibrations are with the smaller pressure coefficients (from 1.46 to 3.12 cm(-1) GPa(-1)). Combined with previous result, the isothermal mode Gruneisen parameters of beta-Ca-3(PO4)(2) were calculated. The splitting of the PO4 symmetric stretching nu (1) vibrations changes during compression and disappears around 15.4 GPa, which may be attributed to the evolution of PO4 tetrahedra under high pressure.
关键词	Whitlockite Β-ca3(Po4)2 High Pressure Raman Spectra
学科领域	地球深部物质与流体作用地球化学
收录类别	SCI
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/5954
专题	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,Xiang Wu,Weihong Xue. Pressure-dependent Raman spectra of beta-Ca-3(PO4)(2) whitlockite[J]. Physics and Chemistry of Minerals,2015,42(4):303-308.
APA	Shuangmeng Zhai,Xiang Wu,&Weihong Xue.(2015).Pressure-dependent Raman spectra of beta-Ca-3(PO4)(2) whitlockite.Physics and Chemistry of Minerals,42(4),303-308.
MLA	Shuangmeng Zhai,et al."Pressure-dependent Raman spectra of beta-Ca-3(PO4)(2) whitlockite".Physics and Chemistry of Minerals 42.4(2015):303-308.

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