摘要
由对待碱的地球 fluorosilicate 玻璃的热，包含碱的地球氟化物 nanocrystallites 的透明玻璃陶艺被准备。在玻璃和玻璃陶艺里与 Eu3+:5D2 7F0 联系的光系列和声子边带被调查在 Eu3+ 附近分析本地环境。Judd-Ofelt 参数也从排放系列被计算，它显示 Eu3+ 离子进入了猛抛的 CaF2， SrF2，和 BaF2 nanocrystallites。对待的热不能发誓 Eu3+ 离子与 F 协调吗？在猛抛的 MgF2 nanocrystallites，由于 Mg2+ 的更小的半径比 Eu3+ 的。
By heat treating the alkaline earth fluorosilicate glass, transparent glass ceramics containing alkaline earth fluoride nanocrystallites were prepared. The luminescence spectra and phonon sideband associated with the Eu^3＋：^5D2→^7F0 in glass and glass ceramics were investigated to analyze the local environment around Eu^3＋. Judd-Ofelt parameters were also calculated from emission spectra, which indicated that the Eu^3＋ ions entered the precipitated CaF2, SrF2, and BaF2 nanocrystallites. Heat treating could not pledge Eu^3＋ ions to coordinate with F^- in the precipitated MgF2 nanocrystallites, owing to the smaller radius of Mg^2＋ than that of Eu^3＋.
基金
supported by the Science and Technology Department of Zhejiang Province (2006C14010)
the Chinese-French Cooperation Programs (MX 07-01)
关键词
碱性元素
玻璃陶瓷
PSB
J-O参数
稀土
europium
alkaline earth
glass ceramic
PSB
J-O parameters
rare earths
