红光上转换玻璃陶瓷材料中的钨酸盐微晶与水分子的相互作用

INTERACTIONS BETWEEN TUNGSTATE MICROCRYSTAL IN GLASS CERAMICS OF RED LIGHT UPCONVERSION AND WATER 

应用拉曼光谱对系列玻璃陶瓷ＰｂＦ２ ＋ ＷＯ３ ＋ ＧｅＯ２ 以及ＰｂＦ２ ＋ ＷＯ３ ＋ ＧｅＯ２ ＋ ＹｂＦ３ ＋ ＴｍＦ３ 进行了研究．其结果表明玻璃陶瓷ＰｂＦ２ ＋ ＷＯ３ ＋ ＧｅＯ２ 结构高度无序，ＰｂＦ２ ＋ ＷＯ３ ＋ ＧｅＯ２ 中的ＷＯ３ 的振动模以展宽的强带出现在高频区．然而，Ｙｂ３ ＋ 和Ｔｍ３ ＋ 的掺入并部分地替代Ｐｂ２ ＋ 的格位后，所有的拉曼带都窄化，这表明玻璃陶瓷已微晶化．ＰｂＦ２ ＋ ＷＯ３ ＋ ＧｅＯ２ ＋ ＹｂＦ３ ＋ ＴｍＦ３ 中的ＷＯ３ 和Ｈ２Ｏ 之间的相互作用表明ＷＯ３ 微晶吸附在ＰｂＦ２ ：Ｙｂ３ ＋ ，Ｔｍ３＋

A series of PbF\-2+WO\-3+GeO\-2(PWG) containing 5,10 and 15 mol% of WO\-3 and PbF\-2+WO\-3+GeO\-2 doped with YbF\-3 and TmF\-3 (PWG:Yb 3+ ,Tm 3+ ) are investigated using Raman scattering.The results showed that the network of PWG is highly disorder.It was also found that the interactions of WO\-3 with H\-2O lead to the small shift of frequency of vibrational mode at 905?cm -1 of WO\-3 and the lightly widening of its full width at half maximum,which have a reversiblity as a result of immersion and removal of H\-2O.