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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); Liu J(刘景)
AbstractCrystal 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.
Subject AreaPhysics
Indexed BySCI ; ADS
WOS IDWOS:000326639200033
ADS Bibcode2013JAP...114p3521L
ADS URLhttps://ui.adsabs.harvard.edu/abs/2013JAP...114p3521L
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2013JAP...114p3521L/citations
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Cited Times:5 [ADS]
Document Type期刊论文
Recommended Citation
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.
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