Pressure-induced structural evolution and amorphization in Eu3Ga5O12

	Pressure-induced structural evolution and amorphization in Eu3Ga5O12
	Lin CL(林传龙); Li YC(李延春); Li XD(李晓东); Lin, CL; Li, YC; Li, XD; Li, R; Lin, JF; Liu, J; Li R(李瑞)
刊名	JOURNAL OF APPLIED PHYSICS
	2013
卷号	114 期号:16 页码:163521
英文摘要	Crystal structural evolution of europium gallium garnet (Eu3Ga5O12; EGG) has been investigated by a combination of synchrotron x-ray diffraction, Raman scattering, and photoluminescence spectroscopy in a high-pressure diamond anvil cell. The cubic garnet EGG mostly collapses into an amorphous state upon compression to 85 GPa at room temperature. High-pressure Raman and photoluminescence spectra indicate that the amorphization process is related to the interaction and deformation of the tetrahedra GaO4 and octahedra GaO6 under compression, leading to the increase of the asymmetry of the local oxygen environment around the Eu3+ site with increasing pressures. The amorphization of EGG is associated with the overlapping of the tetrahedra and octahedra and the increase of the average coordination numbers of the Ga3+ ions in the amorphous state. X-ray diffraction spectra of EGG taken from a laser-heated diamond anvil cell demonstrate that the pressure-induced garnet-to-amorphous transition could result from the kinetic hindrance of a crystal-to-crystal phase transition at room temperature, rather than the decomposition reported earlier. (C) 2013 AIP Publishing LLC.
学科主题	Physics
收录类别	SCI
WOS记录号	WOS:000326639200033
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224659]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Lin CL,Li YC,Li XD,et al. Pressure-induced structural evolution and amorphization in Eu3Ga5O12[J]. JOURNAL OF APPLIED PHYSICS,2013,114(16):163521.
APA	林传龙.,李延春.,李晓东.,Lin, CL.,Li, YC.,...&刘景.(2013).Pressure-induced structural evolution and amorphization in Eu3Ga5O12.JOURNAL OF APPLIED PHYSICS,114(16),163521.
MLA	林传龙,et al."Pressure-induced structural evolution and amorphization in Eu3Ga5O12".JOURNAL OF APPLIED PHYSICS 114.16(2013):163521.