COORDINATION OF GA3+ IONS IN PBO-GA2O3 GLASSES AS DETERMINED BY GA-71 NMR

被引:39
作者
MIYAJI, F
TADANAGA, K
YOKO, T
SAKKA, S
机构
关键词
D O I
10.1016/S0022-3093(05)80834-8
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Ga-71 NMR spectra of GaAs and beta-LiGaO2 crystals consisting of four-coordinated Ga3+ ions, GaNbO4 and alpha-Ga2O3 crystals consisting of six-coordinated Ga3+ ions, and PbO-Ga2O3 glasses were measured. About 240 ppm difference in chemical shift was observed between the spectra of beta-LiGaO2 crystal and GaNbO4 crystal. It has been found that Ga3+ ions are mainly tetrahedrally coordinated by four oxygen ions in the glasses by comparison of spectra of the glasses with those of the crystals.
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页码:268 / 270
页数:3
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