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Elastic properties study of single crystal NH3 up to 26?GPa
Li, FF; Duan, D; Li, M; Ma, CL; Cui, QL; Cui, T; Zhou, Q; Li, XD; Li, YC; Liu, J; Zou, GT;李晓东; Li YC(李延春); Liu J(刘景)
2012
发表期刊JOURNAL OF RAMAN SPECTROSCOPY
卷号43期号:4页码:526-531
摘要Single crystal Brillouin and Raman scattering measurements on NH3 in a diamond anvil cell have been performed under pressures up to 26?GPa at room temperature. The pressure dependencies of acoustic velocity, adiabatic elastic constants, and bulk moduli of ammonia from liquid to solid III and solid IV phase have been determined. All the nine elastic constants in orthorhombic structure phase IV were presented for the first time, each elastic constant grows monotonously with pressure and a crossover of the off-diagonal moduli C12 and C13 was observed at around 12?GPa because of their different pressure derivative values. We also performed ab initio simulations to calculate the bulk elastic moduli for orthorhombic ammonia, the calculated bulk moduli agree well with experimental results. In Raman spectra the very weak bending modes ?2 and ?4 for orthorhombic ammonia are both observed at room temperature, a transition point near 12?GPa is also found from the pressure evolution of the Raman bands. Copyright (c) 2011 John Wiley & Sons, Ltd.
关键词ammonia high pressure Brillouin scattering elastic modulus Raman scattering
学科领域Spectroscopy
DOI10.1002/jrs.3068
收录类别SCI
WOS记录号WOS:000302952800010
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224006
专题多学科研究中心
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GB/T 7714
Li, FF,Duan, D,Li, M,et al. Elastic properties study of single crystal NH3 up to 26?GPa[J]. JOURNAL OF RAMAN SPECTROSCOPY,2012,43(4):526-531.
APA Li, FF.,Duan, D.,Li, M.,Ma, CL.,Cui, QL.,...&刘景.(2012).Elastic properties study of single crystal NH3 up to 26?GPa.JOURNAL OF RAMAN SPECTROSCOPY,43(4),526-531.
MLA Li, FF,et al."Elastic properties study of single crystal NH3 up to 26?GPa".JOURNAL OF RAMAN SPECTROSCOPY 43.4(2012):526-531.
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