Structural transformations in LiGd9(SiO4)6O2 and Ca2Gd8(SiO4)6O2 crystals containing isolated [SiO4] complexes: Raman spectroscopic study

被引：0
|
作者：
Yu. K. Voron’ko
A. A. Sobol’
V. E. Shukshin
A. I. Zagumennyi
Yu. D. Zavartsev
S. A. Kutovoi
机构：
[1] Russian Academy of Sciences,Prokhorov General Physics Institute
来源：
Physics of the Solid State | 2012年 / 54卷
关键词：
Raman Spectrum; Rapid Quenching; Internal Vibration; External Vibration; Polarize Raman Spectrum;
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摘要：
The vibrational spectra of single crystals of the LiGd9(SiO4)6O2 and Ca2Gd8(SiO4)6O2 oxyapatites have been studied using Raman spectroscopy at room and high temperatures. The spectra of internal and external vibrations in these structures have been resolved. The structural transformation of the LiGd9(SiO4)6O2 and Ca2Gd8(SiO4)6O2 oxyapatites in the processes of melting and crystallization, as well as during rapid quenching of the melt, has been investigated. It has been found that the melting of the LiGd9(SiO4)6O2 compound has an incongruent character and that new metastable disordered phases are formed during rapid quenching of the Ca2Gd8(SiO4)6O2 melt.
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页码：1635 / 1642
页数：7
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